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Finding the Fourth Proportional to 122,555.56, 169,126.76 and 68,840.60

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Solution

The fourth proportional to 122,555.56, 169,126.76 and 68,840.60 is: 95,000.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,555.56 : 169,126.76 = 68,840.60 : x
  2. Step 2: Convert to fraction form
    122,555.56/169,126.76 = 68,840.60/x
  3. Step 3: Cross multiply
    122,555.56x = 169,126.76 × 68,840.60
  4. Step 4: Simplify right side
    122,555.56x = 11,642,787,290.25
  5. Step 5: Solve for x
    x = 11,642,787,290.25/122,555.56
  6. Step 6: Final answer
    x = 95,000.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.