Home / 90,680,536.40-136,286,225.40-79,002,021.20

Finding the Fourth Proportional to 90,680,536.40, 136,286,225.40 and 79,002,021.20

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Solution

The fourth proportional to 90,680,536.40, 136,286,225.40 and 79,002,021.20 is: 118,734,269.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,680,536.40 : 136,286,225.40 = 79,002,021.20 : x
  2. Step 2: Convert to fraction form
    90,680,536.40/136,286,225.40 = 79,002,021.20/x
  3. Step 3: Cross multiply
    90,680,536.40x = 136,286,225.40 × 79,002,021.20
  4. Step 4: Simplify right side
    90,680,536.40x = 10,766,887,268,318,780
  5. Step 5: Solve for x
    x = 10,766,887,268,318,780/90,680,536.40
  6. Step 6: Final answer
    x = 118,734,269.73

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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.