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Finding the Fourth Proportional to 84,231.60, 126,001.80 and 75,937.20

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Solution

The fourth proportional to 84,231.60, 126,001.80 and 75,937.20 is: 113,594.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,231.60 : 126,001.80 = 75,937.20 : x
  2. Step 2: Convert to fraction form
    84,231.60/126,001.80 = 75,937.20/x
  3. Step 3: Cross multiply
    84,231.60x = 126,001.80 × 75,937.20
  4. Step 4: Simplify right side
    84,231.60x = 9,568,223,886.96
  5. Step 5: Solve for x
    x = 9,568,223,886.96/84,231.60
  6. Step 6: Final answer
    x = 113,594.23

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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.