Home / 79,946.10-119,919.15-66,921.30

Finding the Fourth Proportional to 79,946.10, 119,919.15 and 66,921.30

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Solution

The fourth proportional to 79,946.10, 119,919.15 and 66,921.30 is: 100,381.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,946.10 : 119,919.15 = 66,921.30 : x
  2. Step 2: Convert to fraction form
    79,946.10/119,919.15 = 66,921.30/x
  3. Step 3: Cross multiply
    79,946.10x = 119,919.15 × 66,921.30
  4. Step 4: Simplify right side
    79,946.10x = 8,025,145,412.90
  5. Step 5: Solve for x
    x = 8,025,145,412.90/79,946.10
  6. Step 6: Final answer
    x = 100,381.95

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Similar ratio
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1.5x scale

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.