Home / 80,436.64-120,001.84-76,082.08

Finding the Fourth Proportional to 80,436.64, 120,001.84 and 76,082.08

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Solution

The fourth proportional to 80,436.64, 120,001.84 and 76,082.08 is: 113,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,436.64 : 120,001.84 = 76,082.08 : x
  2. Step 2: Convert to fraction form
    80,436.64/120,001.84 = 76,082.08/x
  3. Step 3: Cross multiply
    80,436.64x = 120,001.84 × 76,082.08
  4. Step 4: Simplify right side
    80,436.64x = 9,129,989,591.03
  5. Step 5: Solve for x
    x = 9,129,989,591.03/80,436.64
  6. Step 6: Final answer
    x = 113,505.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.