Home / 84,002.30-126,003.45-81,151.10

Finding the Fourth Proportional to 84,002.30, 126,003.45 and 81,151.10

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Solution

The fourth proportional to 84,002.30, 126,003.45 and 81,151.10 is: 121,726.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,002.30 : 126,003.45 = 81,151.10 : x
  2. Step 2: Convert to fraction form
    84,002.30/126,003.45 = 81,151.10/x
  3. Step 3: Cross multiply
    84,002.30x = 126,003.45 × 81,151.10
  4. Step 4: Simplify right side
    84,002.30x = 10,225,318,571.30
  5. Step 5: Solve for x
    x = 10,225,318,571.30/84,002.30
  6. Step 6: Final answer
    x = 121,726.65

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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.