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Finding the Fourth Proportional to 125,184.38, 172,754.46 and 74,883.38

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Solution

The fourth proportional to 125,184.38, 172,754.46 and 74,883.38 is: 103,339.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,184.38 : 172,754.46 = 74,883.38 : x
  2. Step 2: Convert to fraction form
    125,184.38/172,754.46 = 74,883.38/x
  3. Step 3: Cross multiply
    125,184.38x = 172,754.46 × 74,883.38
  4. Step 4: Simplify right side
    125,184.38x = 12,936,437,011.10
  5. Step 5: Solve for x
    x = 12,936,437,011.10/125,184.38
  6. Step 6: Final answer
    x = 103,339.07

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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.