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Finding the Fourth Proportional to 125,220.15, 187,848.45 and 40,959.90

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Solution

The fourth proportional to 125,220.15, 187,848.45 and 40,959.90 is: 61,445.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,220.15 : 187,848.45 = 40,959.90 : x
  2. Step 2: Convert to fraction form
    125,220.15/187,848.45 = 40,959.90/x
  3. Step 3: Cross multiply
    125,220.15x = 187,848.45 × 40,959.90
  4. Step 4: Simplify right side
    125,220.15x = 7,694,253,727.16
  5. Step 5: Solve for x
    x = 7,694,253,727.16/125,220.15
  6. Step 6: Final answer
    x = 61,445.81

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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.