Home / 138,884.13-208,336.01-68,744.61

Finding the Fourth Proportional to 138,884.13, 208,336.01 and 68,744.61

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Solution

The fourth proportional to 138,884.13, 208,336.01 and 68,744.61 is: 103,121.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,884.13 : 208,336.01 = 68,744.61 : x
  2. Step 2: Convert to fraction form
    138,884.13/208,336.01 = 68,744.61/x
  3. Step 3: Cross multiply
    138,884.13x = 208,336.01 × 68,744.61
  4. Step 4: Simplify right side
    138,884.13x = 14,321,977,412.68
  5. Step 5: Solve for x
    x = 14,321,977,412.68/138,884.13
  6. Step 6: Final answer
    x = 103,121.77

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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.