Home / 138,656.12-207,984.18-45,161.86

Finding the Fourth Proportional to 138,656.12, 207,984.18 and 45,161.86

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Solution

The fourth proportional to 138,656.12, 207,984.18 and 45,161.86 is: 67,742.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,656.12 : 207,984.18 = 45,161.86 : x
  2. Step 2: Convert to fraction form
    138,656.12/207,984.18 = 45,161.86/x
  3. Step 3: Cross multiply
    138,656.12x = 207,984.18 × 45,161.86
  4. Step 4: Simplify right side
    138,656.12x = 9,392,952,419.37
  5. Step 5: Solve for x
    x = 9,392,952,419.37/138,656.12
  6. Step 6: Final answer
    x = 67,742.79

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Similar ratio
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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.