Home / 159,741.20-220,442.36-88,129.10

Finding the Fourth Proportional to 159,741.20, 220,442.36 and 88,129.10

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Solution

The fourth proportional to 159,741.20, 220,442.36 and 88,129.10 is: 121,617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,741.20 : 220,442.36 = 88,129.10 : x
  2. Step 2: Convert to fraction form
    159,741.20/220,442.36 = 88,129.10/x
  3. Step 3: Cross multiply
    159,741.20x = 220,442.36 × 88,129.10
  4. Step 4: Simplify right side
    159,741.20x = 19,427,386,788.68
  5. Step 5: Solve for x
    x = 19,427,386,788.68/159,741.20
  6. Step 6: Final answer
    x = 121,617.88

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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.