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Finding the Fourth Proportional to 147,963.96, 204,190.29 and 79,980.75

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Solution

The fourth proportional to 147,963.96, 204,190.29 and 79,980.75 is: 110,373.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,963.96 : 204,190.29 = 79,980.75 : x
  2. Step 2: Convert to fraction form
    147,963.96/204,190.29 = 79,980.75/x
  3. Step 3: Cross multiply
    147,963.96x = 204,190.29 × 79,980.75
  4. Step 4: Simplify right side
    147,963.96x = 16,331,292,536.92
  5. Step 5: Solve for x
    x = 16,331,292,536.92/147,963.96
  6. Step 6: Final answer
    x = 110,373.45

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Half scale
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Double scale
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Similar ratio
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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.