Home / 84,400,820.80-126,601,231.20-78,732,116.80

Finding the Fourth Proportional to 84,400,820.80, 126,601,231.20 and 78,732,116.80

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Solution

The fourth proportional to 84,400,820.80, 126,601,231.20 and 78,732,116.80 is: 118,098,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,400,820.80 : 126,601,231.20 = 78,732,116.80 : x
  2. Step 2: Convert to fraction form
    84,400,820.80/126,601,231.20 = 78,732,116.80/x
  3. Step 3: Cross multiply
    84,400,820.80x = 126,601,231.20 × 78,732,116.80
  4. Step 4: Simplify right side
    84,400,820.80x = 9,967,582,921,862,204
  5. Step 5: Solve for x
    x = 9,967,582,921,862,204/84,400,820.80
  6. Step 6: Final answer
    x = 118,098,175.20

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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.