Home / 154,505,016.40-231,934,471.80-90,715,550.80

Finding the Fourth Proportional to 154,505,016.40, 231,934,471.80 and 90,715,550.80

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Solution

The fourth proportional to 154,505,016.40, 231,934,471.80 and 90,715,550.80 is: 136,177,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,505,016.40 : 231,934,471.80 = 90,715,550.80 : x
  2. Step 2: Convert to fraction form
    154,505,016.40/231,934,471.80 = 90,715,550.80/x
  3. Step 3: Cross multiply
    154,505,016.40x = 231,934,471.80 × 90,715,550.80
  4. Step 4: Simplify right side
    154,505,016.40x = 21,040,063,358,844,068
  5. Step 5: Solve for x
    x = 21,040,063,358,844,068/154,505,016.40
  6. Step 6: Final answer
    x = 136,177,218.38

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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.