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Finding the Fourth Proportional to 100,562.88, 138,772.28 and 60,298.86

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Solution

The fourth proportional to 100,562.88, 138,772.28 and 60,298.86 is: 83,209.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,562.88 : 138,772.28 = 60,298.86 : x
  2. Step 2: Convert to fraction form
    100,562.88/138,772.28 = 60,298.86/x
  3. Step 3: Cross multiply
    100,562.88x = 138,772.28 × 60,298.86
  4. Step 4: Simplify right side
    100,562.88x = 8,367,810,283.60
  5. Step 5: Solve for x
    x = 8,367,810,283.60/100,562.88
  6. Step 6: Final answer
    x = 83,209.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.