Home / 100,613.20-151,092.60-71,237.20

Finding the Fourth Proportional to 100,613.20, 151,092.60 and 71,237.20

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Solution

The fourth proportional to 100,613.20, 151,092.60 and 71,237.20 is: 106,978.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,613.20 : 151,092.60 = 71,237.20 : x
  2. Step 2: Convert to fraction form
    100,613.20/151,092.60 = 71,237.20/x
  3. Step 3: Cross multiply
    100,613.20x = 151,092.60 × 71,237.20
  4. Step 4: Simplify right side
    100,613.20x = 10,763,413,764.72
  5. Step 5: Solve for x
    x = 10,763,413,764.72/100,613.20
  6. Step 6: Final answer
    x = 106,978.15

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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.