Home / 109,538.60-151,170.30-61,790.90

Finding the Fourth Proportional to 109,538.60, 151,170.30 and 61,790.90

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Solution

The fourth proportional to 109,538.60, 151,170.30 and 61,790.90 is: 85,275.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,538.60 : 151,170.30 = 61,790.90 : x
  2. Step 2: Convert to fraction form
    109,538.60/151,170.30 = 61,790.90/x
  3. Step 3: Cross multiply
    109,538.60x = 151,170.30 × 61,790.90
  4. Step 4: Simplify right side
    109,538.60x = 9,340,948,134.42
  5. Step 5: Solve for x
    x = 9,340,948,134.42/109,538.60
  6. Step 6: Final answer
    x = 85,275.41

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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.