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Finding the Third Proportional to 60,472 and 129,688

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Solution

The third proportional to 60,472 and 129,688 is: 278,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,472 : 129,688 = 129,688 : x
  2. Step 2: Convert to fraction form
    60,472/129,688 = 129,688/x
  3. Step 3: Cross multiply
    60,472x = 129,688 × 129,688
  4. Step 4: Simplify right side
    60,472x = 16,818,977,344
  5. Step 5: Solve for x
    x = 16,818,977,344/60,472
  6. Step 6: Final answer
    x = 278,128.35

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.