Home / 80,256,245.40-120,384,368.10-79,061,851.80

Finding the Fourth Proportional to 80,256,245.40, 120,384,368.10 and 79,061,851.80

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Solution

The fourth proportional to 80,256,245.40, 120,384,368.10 and 79,061,851.80 is: 118,592,777.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,256,245.40 : 120,384,368.10 = 79,061,851.80 : x
  2. Step 2: Convert to fraction form
    80,256,245.40/120,384,368.10 = 79,061,851.80/x
  3. Step 3: Cross multiply
    80,256,245.40x = 120,384,368.10 × 79,061,851.80
  4. Step 4: Simplify right side
    80,256,245.40x = 9,517,811,069,758,846
  5. Step 5: Solve for x
    x = 9,517,811,069,758,846/80,256,245.40
  6. Step 6: Final answer
    x = 118,592,777.70

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1.5x scale

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.