Home / 80,998.20-121,497.30-75,166.20

Finding the Fourth Proportional to 80,998.20, 121,497.30 and 75,166.20

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Solution

The fourth proportional to 80,998.20, 121,497.30 and 75,166.20 is: 112,749.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,998.20 : 121,497.30 = 75,166.20 : x
  2. Step 2: Convert to fraction form
    80,998.20/121,497.30 = 75,166.20/x
  3. Step 3: Cross multiply
    80,998.20x = 121,497.30 × 75,166.20
  4. Step 4: Simplify right side
    80,998.20x = 9,132,490,351.26
  5. Step 5: Solve for x
    x = 9,132,490,351.26/80,998.20
  6. Step 6: Final answer
    x = 112,749.30

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Half scale
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Double scale
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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.