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Finding the Fourth Proportional to 104,504.32, 144,257.32 and 72,691.68

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Solution

The fourth proportional to 104,504.32, 144,257.32 and 72,691.68 is: 100,343.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,504.32 : 144,257.32 = 72,691.68 : x
  2. Step 2: Convert to fraction form
    104,504.32/144,257.32 = 72,691.68/x
  3. Step 3: Cross multiply
    104,504.32x = 144,257.32 × 72,691.68
  4. Step 4: Simplify right side
    104,504.32x = 10,486,306,943.10
  5. Step 5: Solve for x
    x = 10,486,306,943.10/104,504.32
  6. Step 6: Final answer
    x = 100,343.29

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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.