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Finding the Fourth Proportional to 100,987.68, 151,649.44 and 63,124.64

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Solution

The fourth proportional to 100,987.68, 151,649.44 and 63,124.64 is: 94,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,987.68 : 151,649.44 = 63,124.64 : x
  2. Step 2: Convert to fraction form
    100,987.68/151,649.44 = 63,124.64/x
  3. Step 3: Cross multiply
    100,987.68x = 151,649.44 × 63,124.64
  4. Step 4: Simplify right side
    100,987.68x = 9,572,816,306.20
  5. Step 5: Solve for x
    x = 9,572,816,306.20/100,987.68
  6. Step 6: Final answer
    x = 94,791.92

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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.