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Finding the Fourth Proportional to 168,715.53, 252,948.24 and 102,139.92

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Solution

The fourth proportional to 168,715.53, 252,948.24 and 102,139.92 is: 153,134.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,715.53 : 252,948.24 = 102,139.92 : x
  2. Step 2: Convert to fraction form
    168,715.53/252,948.24 = 102,139.92/x
  3. Step 3: Cross multiply
    168,715.53x = 252,948.24 × 102,139.92
  4. Step 4: Simplify right side
    168,715.53x = 25,836,112,997.74
  5. Step 5: Solve for x
    x = 25,836,112,997.74/168,715.53
  6. Step 6: Final answer
    x = 153,134.17

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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.