Home / 82,001.10-123,001.65-74,127.90

Finding the Fourth Proportional to 82,001.10, 123,001.65 and 74,127.90

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Solution

The fourth proportional to 82,001.10, 123,001.65 and 74,127.90 is: 111,191.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,001.10 : 123,001.65 = 74,127.90 : x
  2. Step 2: Convert to fraction form
    82,001.10/123,001.65 = 74,127.90/x
  3. Step 3: Cross multiply
    82,001.10x = 123,001.65 × 74,127.90
  4. Step 4: Simplify right side
    82,001.10x = 9,117,854,011.04
  5. Step 5: Solve for x
    x = 9,117,854,011.04/82,001.10
  6. Step 6: Final answer
    x = 111,191.85

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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.