Home / 80,676,082.10-121,014,123.15-20,091,808.10

Finding the Fourth Proportional to 80,676,082.10, 121,014,123.15 and 20,091,808.10

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Solution

The fourth proportional to 80,676,082.10, 121,014,123.15 and 20,091,808.10 is: 30,137,712.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,676,082.10 : 121,014,123.15 = 20,091,808.10 : x
  2. Step 2: Convert to fraction form
    80,676,082.10/121,014,123.15 = 20,091,808.10/x
  3. Step 3: Cross multiply
    80,676,082.10x = 121,014,123.15 × 20,091,808.10
  4. Step 4: Simplify right side
    80,676,082.10x = 2,431,392,539,719,568
  5. Step 5: Solve for x
    x = 2,431,392,539,719,568/80,676,082.10
  6. Step 6: Final answer
    x = 30,137,712.15

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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.