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Finding the Fourth Proportional to 138,799.80, 208,168.53 and 63,847.95

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Solution

The fourth proportional to 138,799.80, 208,168.53 and 63,847.95 is: 95,757.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,799.80 : 208,168.53 = 63,847.95 : x
  2. Step 2: Convert to fraction form
    138,799.80/208,168.53 = 63,847.95/x
  3. Step 3: Cross multiply
    138,799.80x = 208,168.53 × 63,847.95
  4. Step 4: Simplify right side
    138,799.80x = 13,291,133,895.01
  5. Step 5: Solve for x
    x = 13,291,133,895.01/138,799.80
  6. Step 6: Final answer
    x = 95,757.59

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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.