Home / 138,780,010.80-208,170,016.20-98,469,226.80

Finding the Fourth Proportional to 138,780,010.80, 208,170,016.20 and 98,469,226.80

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Solution

The fourth proportional to 138,780,010.80, 208,170,016.20 and 98,469,226.80 is: 147,703,840.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,780,010.80 : 208,170,016.20 = 98,469,226.80 : x
  2. Step 2: Convert to fraction form
    138,780,010.80/208,170,016.20 = 98,469,226.80/x
  3. Step 3: Cross multiply
    138,780,010.80x = 208,170,016.20 × 98,469,226.80
  4. Step 4: Simplify right side
    138,780,010.80x = 20,498,340,538,157,472
  5. Step 5: Solve for x
    x = 20,498,340,538,157,472/138,780,010.80
  6. Step 6: Final answer
    x = 147,703,840.20

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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.