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Finding the Fourth Proportional to 125,175.38, 172,742.02 and 74,874.38

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Solution

The fourth proportional to 125,175.38, 172,742.02 and 74,874.38 is: 103,326.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,175.38 : 172,742.02 = 74,874.38 : x
  2. Step 2: Convert to fraction form
    125,175.38/172,742.02 = 74,874.38/x
  3. Step 3: Cross multiply
    125,175.38x = 172,742.02 × 74,874.38
  4. Step 4: Simplify right side
    125,175.38x = 12,933,950,596.55
  5. Step 5: Solve for x
    x = 12,933,950,596.55/125,175.38
  6. Step 6: Final answer
    x = 103,326.64

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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.