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Finding the Fourth Proportional to 125,160.70, 187,752.57 and 40,921.31

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Solution

The fourth proportional to 125,160.70, 187,752.57 and 40,921.31 is: 61,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,160.70 : 187,752.57 = 40,921.31 : x
  2. Step 2: Convert to fraction form
    125,160.70/187,752.57 = 40,921.31/x
  3. Step 3: Cross multiply
    125,160.70x = 187,752.57 × 40,921.31
  4. Step 4: Simplify right side
    125,160.70x = 7,683,081,120.27
  5. Step 5: Solve for x
    x = 7,683,081,120.27/125,160.70
  6. Step 6: Final answer
    x = 61,385.73

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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.