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Finding the Fourth Proportional to 138,794.79, 208,161.04 and 63,842.95

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Solution

The fourth proportional to 138,794.79, 208,161.04 and 63,842.95 is: 95,750.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,794.79 : 208,161.04 = 63,842.95 : x
  2. Step 2: Convert to fraction form
    138,794.79/208,161.04 = 63,842.95/x
  3. Step 3: Cross multiply
    138,794.79x = 208,161.04 × 63,842.95
  4. Step 4: Simplify right side
    138,794.79x = 13,289,614,868.67
  5. Step 5: Solve for x
    x = 13,289,614,868.67/138,794.79
  6. Step 6: Final answer
    x = 95,750.10

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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.