Home / 154,601,812.80-231,930,712.80-77,731,387.20

Finding the Fourth Proportional to 154,601,812.80, 231,930,712.80 and 77,731,387.20

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Solution

The fourth proportional to 154,601,812.80, 231,930,712.80 and 77,731,387.20 is: 116,611,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,601,812.80 : 231,930,712.80 = 77,731,387.20 : x
  2. Step 2: Convert to fraction form
    154,601,812.80/231,930,712.80 = 77,731,387.20/x
  3. Step 3: Cross multiply
    154,601,812.80x = 231,930,712.80 × 77,731,387.20
  4. Step 4: Simplify right side
    154,601,812.80x = 18,028,296,040,228,796
  5. Step 5: Solve for x
    x = 18,028,296,040,228,796/154,601,812.80
  6. Step 6: Final answer
    x = 116,611,155.55

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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.