Home / 113,921.60-156,070-109,662.20

Finding the Fourth Proportional to 113,921.60, 156,070 and 109,662.20

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Solution

The fourth proportional to 113,921.60, 156,070 and 109,662.20 is: 150,234.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,921.60 : 156,070 = 109,662.20 : x
  2. Step 2: Convert to fraction form
    113,921.60/156,070 = 109,662.20/x
  3. Step 3: Cross multiply
    113,921.60x = 156,070 × 109,662.20
  4. Step 4: Simplify right side
    113,921.60x = 17,114,979,554
  5. Step 5: Solve for x
    x = 17,114,979,554/113,921.60
  6. Step 6: Final answer
    x = 150,234.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.