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Finding the Fourth Proportional to 138,763.74, 208,228.65 and 59,877.97

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Solution

The fourth proportional to 138,763.74, 208,228.65 and 59,877.97 is: 89,852.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,763.74 : 208,228.65 = 59,877.97 : x
  2. Step 2: Convert to fraction form
    138,763.74/208,228.65 = 59,877.97/x
  3. Step 3: Cross multiply
    138,763.74x = 208,228.65 × 59,877.97
  4. Step 4: Simplify right side
    138,763.74x = 12,468,308,857.84
  5. Step 5: Solve for x
    x = 12,468,308,857.84/138,763.74
  6. Step 6: Final answer
    x = 89,852.79

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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.