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Finding the Fourth Proportional to 12,131,888,129.70, 18,197,832,194.55 and 12,131,888,129.70

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Solution

The fourth proportional to 12,131,888,129.70, 18,197,832,194.55 and 12,131,888,129.70 is: 18,197,832,194.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131,888,129.70 : 18,197,832,194.55 = 12,131,888,129.70 : x
  2. Step 2: Convert to fraction form
    12,131,888,129.70/18,197,832,194.55 = 12,131,888,129.70/x
  3. Step 3: Cross multiply
    12,131,888,129.70x = 18,197,832,194.55 × 12,131,888,129.70
  4. Step 4: Simplify right side
    12,131,888,129.70x = 220,774,064,387,333,652,480
  5. Step 5: Solve for x
    x = 220,774,064,387,333,652,480/12,131,888,129.70
  6. Step 6: Final answer
    x = 18,197,832,194.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.