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Finding the Fourth Proportional to 138,793.79, 208,159.55 and 63,841.95

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Solution

The fourth proportional to 138,793.79, 208,159.55 and 63,841.95 is: 95,748.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,793.79 : 208,159.55 = 63,841.95 : x
  2. Step 2: Convert to fraction form
    138,793.79/208,159.55 = 63,841.95/x
  3. Step 3: Cross multiply
    138,793.79x = 208,159.55 × 63,841.95
  4. Step 4: Simplify right side
    138,793.79x = 13,289,311,263.91
  5. Step 5: Solve for x
    x = 13,289,311,263.91/138,793.79
  6. Step 6: Final answer
    x = 95,748.60

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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.