Home / 159,743.20-220,445.12-88,131.10

Finding the Fourth Proportional to 159,743.20, 220,445.12 and 88,131.10

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Solution

The fourth proportional to 159,743.20, 220,445.12 and 88,131.10 is: 121,620.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,743.20 : 220,445.12 = 88,131.10 : x
  2. Step 2: Convert to fraction form
    159,743.20/220,445.12 = 88,131.10/x
  3. Step 3: Cross multiply
    159,743.20x = 220,445.12 × 88,131.10
  4. Step 4: Simplify right side
    159,743.20x = 19,428,070,915.23
  5. Step 5: Solve for x
    x = 19,428,070,915.23/159,743.20
  6. Step 6: Final answer
    x = 121,620.64

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1.5x scale

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.