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Finding the Fourth Proportional to 138,248.86, 207,371.90 and 63,347.74

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Solution

The fourth proportional to 138,248.86, 207,371.90 and 63,347.74 is: 95,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,248.86 : 207,371.90 = 63,347.74 : x
  2. Step 2: Convert to fraction form
    138,248.86/207,371.90 = 63,347.74/x
  3. Step 3: Cross multiply
    138,248.86x = 207,371.90 × 63,347.74
  4. Step 4: Simplify right side
    138,248.86x = 13,136,541,204.51
  5. Step 5: Solve for x
    x = 13,136,541,204.51/138,248.86
  6. Step 6: Final answer
    x = 95,020.97

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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.