Home / 90,629,172.56-136,038,844.83-80,320,348.96

Finding the Fourth Proportional to 90,629,172.56, 136,038,844.83 and 80,320,348.96

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Solution

The fourth proportional to 90,629,172.56, 136,038,844.83 and 80,320,348.96 is: 120,564,793.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,629,172.56 : 136,038,844.83 = 80,320,348.96 : x
  2. Step 2: Convert to fraction form
    90,629,172.56/136,038,844.83 = 80,320,348.96/x
  3. Step 3: Cross multiply
    90,629,172.56x = 136,038,844.83 × 80,320,348.96
  4. Step 4: Simplify right side
    90,629,172.56x = 10,926,687,488,860,892
  5. Step 5: Solve for x
    x = 10,926,687,488,860,892/90,629,172.56
  6. Step 6: Final answer
    x = 120,564,793.66

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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.