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Finding the Fourth Proportional to 125,532, 173,249.52 and 72,540

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Solution

The fourth proportional to 125,532, 173,249.52 and 72,540 is: 100,114.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,532 : 173,249.52 = 72,540 : x
  2. Step 2: Convert to fraction form
    125,532/173,249.52 = 72,540/x
  3. Step 3: Cross multiply
    125,532x = 173,249.52 × 72,540
  4. Step 4: Simplify right side
    125,532x = 12,567,520,180.80
  5. Step 5: Solve for x
    x = 12,567,520,180.80/125,532
  6. Step 6: Final answer
    x = 100,114.08

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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.