Home / 84,400,830.80-126,601,246.20-78,732,126.80

Finding the Fourth Proportional to 84,400,830.80, 126,601,246.20 and 78,732,126.80

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Solution

The fourth proportional to 84,400,830.80, 126,601,246.20 and 78,732,126.80 is: 118,098,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,400,830.80 : 126,601,246.20 = 78,732,126.80 : x
  2. Step 2: Convert to fraction form
    84,400,830.80/126,601,246.20 = 78,732,126.80/x
  3. Step 3: Cross multiply
    84,400,830.80x = 126,601,246.20 × 78,732,126.80
  4. Step 4: Simplify right side
    84,400,830.80x = 9,967,585,368,856,418
  5. Step 5: Solve for x
    x = 9,967,585,368,856,418/84,400,830.80
  6. Step 6: Final answer
    x = 118,098,190.20

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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.