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Finding the Fourth Proportional to 84,234.60, 126,006.30 and 75,940.20

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Solution

The fourth proportional to 84,234.60, 126,006.30 and 75,940.20 is: 113,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,234.60 : 126,006.30 = 75,940.20 : x
  2. Step 2: Convert to fraction form
    84,234.60/126,006.30 = 75,940.20/x
  3. Step 3: Cross multiply
    84,234.60x = 126,006.30 × 75,940.20
  4. Step 4: Simplify right side
    84,234.60x = 9,568,943,623.26
  5. Step 5: Solve for x
    x = 9,568,943,623.26/84,234.60
  6. Step 6: Final answer
    x = 113,598.73

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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.