Home / 138,744.06-191,467.34-75,081.88

Finding the Fourth Proportional to 138,744.06, 191,467.34 and 75,081.88

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Solution

The fourth proportional to 138,744.06, 191,467.34 and 75,081.88 is: 103,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,744.06 : 191,467.34 = 75,081.88 : x
  2. Step 2: Convert to fraction form
    138,744.06/191,467.34 = 75,081.88/x
  3. Step 3: Cross multiply
    138,744.06x = 191,467.34 × 75,081.88
  4. Step 4: Simplify right side
    138,744.06x = 14,375,727,845.80
  5. Step 5: Solve for x
    x = 14,375,727,845.80/138,744.06
  6. Step 6: Final answer
    x = 103,613.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.