Home / 100,167.20-138,241.71-63,869.93

Finding the Fourth Proportional to 100,167.20, 138,241.71 and 63,869.93

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Solution

The fourth proportional to 100,167.20, 138,241.71 and 63,869.93 is: 88,147.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,167.20 : 138,241.71 = 63,869.93 : x
  2. Step 2: Convert to fraction form
    100,167.20/138,241.71 = 63,869.93/x
  3. Step 3: Cross multiply
    100,167.20x = 138,241.71 × 63,869.93
  4. Step 4: Simplify right side
    100,167.20x = 8,829,488,340.78
  5. Step 5: Solve for x
    x = 8,829,488,340.78/100,167.20
  6. Step 6: Final answer
    x = 88,147.50

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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.