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Finding the Fourth Proportional to 125,538.42, 173,272.90 and 71,854.42

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Solution

The fourth proportional to 125,538.42, 173,272.90 and 71,854.42 is: 99,176.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,538.42 : 173,272.90 = 71,854.42 : x
  2. Step 2: Convert to fraction form
    125,538.42/173,272.90 = 71,854.42/x
  3. Step 3: Cross multiply
    125,538.42x = 173,272.90 × 71,854.42
  4. Step 4: Simplify right side
    125,538.42x = 12,450,423,731.22
  5. Step 5: Solve for x
    x = 12,450,423,731.22/125,538.42
  6. Step 6: Final answer
    x = 99,176.20

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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.