Home / 99,720,007.20-149,239,713.60-83,564,200.80

Finding the Fourth Proportional to 99,720,007.20, 149,239,713.60 and 83,564,200.80

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Solution

The fourth proportional to 99,720,007.20, 149,239,713.60 and 83,564,200.80 is: 125,061,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,720,007.20 : 149,239,713.60 = 83,564,200.80 : x
  2. Step 2: Convert to fraction form
    99,720,007.20/149,239,713.60 = 83,564,200.80/x
  3. Step 3: Cross multiply
    99,720,007.20x = 149,239,713.60 × 83,564,200.80
  4. Step 4: Simplify right side
    99,720,007.20x = 12,471,097,394,604,890
  5. Step 5: Solve for x
    x = 12,471,097,394,604,890/99,720,007.20
  6. Step 6: Final answer
    x = 125,061,136.12

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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.