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Finding the Fourth Proportional to 172,472.49, 258,605.06 and 65,863.53

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Solution

The fourth proportional to 172,472.49, 258,605.06 and 65,863.53 is: 98,755.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,472.49 : 258,605.06 = 65,863.53 : x
  2. Step 2: Convert to fraction form
    172,472.49/258,605.06 = 65,863.53/x
  3. Step 3: Cross multiply
    172,472.49x = 258,605.06 × 65,863.53
  4. Step 4: Simplify right side
    172,472.49x = 17,032,641,798.14
  5. Step 5: Solve for x
    x = 17,032,641,798.14/172,472.49
  6. Step 6: Final answer
    x = 98,755.70

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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.