Home / 84,419,445.40-126,629,168.10-79,716,520.60

Finding the Fourth Proportional to 84,419,445.40, 126,629,168.10 and 79,716,520.60

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Solution

The fourth proportional to 84,419,445.40, 126,629,168.10 and 79,716,520.60 is: 119,574,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,419,445.40 : 126,629,168.10 = 79,716,520.60 : x
  2. Step 2: Convert to fraction form
    84,419,445.40/126,629,168.10 = 79,716,520.60/x
  3. Step 3: Cross multiply
    84,419,445.40x = 126,629,168.10 × 79,716,520.60
  4. Step 4: Simplify right side
    84,419,445.40x = 10,094,436,687,404,512
  5. Step 5: Solve for x
    x = 10,094,436,687,404,512/84,419,445.40
  6. Step 6: Final answer
    x = 119,574,780.90

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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.