Home / 84,088,400.40-126,132,600.60-82,387,789.20

Finding the Fourth Proportional to 84,088,400.40, 126,132,600.60 and 82,387,789.20

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Solution

The fourth proportional to 84,088,400.40, 126,132,600.60 and 82,387,789.20 is: 123,581,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,088,400.40 : 126,132,600.60 = 82,387,789.20 : x
  2. Step 2: Convert to fraction form
    84,088,400.40/126,132,600.60 = 82,387,789.20/x
  3. Step 3: Cross multiply
    84,088,400.40x = 126,132,600.60 × 82,387,789.20
  4. Step 4: Simplify right side
    84,088,400.40x = 10,391,786,109,480,594
  5. Step 5: Solve for x
    x = 10,391,786,109,480,594/84,088,400.40
  6. Step 6: Final answer
    x = 123,581,683.80

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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.