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Finding the Fourth Proportional to 124,679.10, 187,136.10 and 65,557.20

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Solution

The fourth proportional to 124,679.10, 187,136.10 and 65,557.20 is: 98,397.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,679.10 : 187,136.10 = 65,557.20 : x
  2. Step 2: Convert to fraction form
    124,679.10/187,136.10 = 65,557.20/x
  3. Step 3: Cross multiply
    124,679.10x = 187,136.10 × 65,557.20
  4. Step 4: Simplify right side
    124,679.10x = 12,268,118,734.92
  5. Step 5: Solve for x
    x = 12,268,118,734.92/124,679.10
  6. Step 6: Final answer
    x = 98,397.56

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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.