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Finding the Fourth Proportional to 124,350.60, 186,720.30 and 71,862.60

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Solution

The fourth proportional to 124,350.60, 186,720.30 and 71,862.60 is: 107,906.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,350.60 : 186,720.30 = 71,862.60 : x
  2. Step 2: Convert to fraction form
    124,350.60/186,720.30 = 71,862.60/x
  3. Step 3: Cross multiply
    124,350.60x = 186,720.30 × 71,862.60
  4. Step 4: Simplify right side
    124,350.60x = 13,418,206,230.78
  5. Step 5: Solve for x
    x = 13,418,206,230.78/124,350.60
  6. Step 6: Final answer
    x = 107,906.24

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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.