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Finding the Fourth Proportional to 172,488.26, 258,773.90 and 72,677.00

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Solution

The fourth proportional to 172,488.26, 258,773.90 and 72,677.00 is: 109,032.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,488.26 : 258,773.90 = 72,677.00 : x
  2. Step 2: Convert to fraction form
    172,488.26/258,773.90 = 72,677.00/x
  3. Step 3: Cross multiply
    172,488.26x = 258,773.90 × 72,677.00
  4. Step 4: Simplify right side
    172,488.26x = 18,806,909,073.05
  5. Step 5: Solve for x
    x = 18,806,909,073.05/172,488.26
  6. Step 6: Final answer
    x = 109,032.98

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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.