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Finding the Fourth Proportional to 172,306.71, 237,748.35 and 100,672.89

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Solution

The fourth proportional to 172,306.71, 237,748.35 and 100,672.89 is: 138,908.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,306.71 : 237,748.35 = 100,672.89 : x
  2. Step 2: Convert to fraction form
    172,306.71/237,748.35 = 100,672.89/x
  3. Step 3: Cross multiply
    172,306.71x = 237,748.35 × 100,672.89
  4. Step 4: Simplify right side
    172,306.71x = 23,934,813,487.23
  5. Step 5: Solve for x
    x = 23,934,813,487.23/172,306.71
  6. Step 6: Final answer
    x = 138,908.19

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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.