Home / 82,742.20-123,966.90-80,001.40

Finding the Fourth Proportional to 82,742.20, 123,966.90 and 80,001.40

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Solution

The fourth proportional to 82,742.20, 123,966.90 and 80,001.40 is: 119,860.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,742.20 : 123,966.90 = 80,001.40 : x
  2. Step 2: Convert to fraction form
    82,742.20/123,966.90 = 80,001.40/x
  3. Step 3: Cross multiply
    82,742.20x = 123,966.90 × 80,001.40
  4. Step 4: Simplify right side
    82,742.20x = 9,917,525,553.66
  5. Step 5: Solve for x
    x = 9,917,525,553.66/82,742.20
  6. Step 6: Final answer
    x = 119,860.55

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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.