Home / 124,921.20-187,163.10-102,613.80

Finding the Fourth Proportional to 124,921.20, 187,163.10 and 102,613.80

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Solution

The fourth proportional to 124,921.20, 187,163.10 and 102,613.80 is: 153,741.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,921.20 : 187,163.10 = 102,613.80 : x
  2. Step 2: Convert to fraction form
    124,921.20/187,163.10 = 102,613.80/x
  3. Step 3: Cross multiply
    124,921.20x = 187,163.10 × 102,613.80
  4. Step 4: Simplify right side
    124,921.20x = 19,205,516,910.78
  5. Step 5: Solve for x
    x = 19,205,516,910.78/124,921.20
  6. Step 6: Final answer
    x = 153,741.05

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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.