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Finding the Fourth Proportional to 125,343.88, 187,922.31 and 75,412.28

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Solution

The fourth proportional to 125,343.88, 187,922.31 and 75,412.28 is: 113,062.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,343.88 : 187,922.31 = 75,412.28 : x
  2. Step 2: Convert to fraction form
    125,343.88/187,922.31 = 75,412.28/x
  3. Step 3: Cross multiply
    125,343.88x = 187,922.31 × 75,412.28
  4. Step 4: Simplify right side
    125,343.88x = 14,171,648,920.36
  5. Step 5: Solve for x
    x = 14,171,648,920.36/125,343.88
  6. Step 6: Final answer
    x = 113,062.15

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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.