Home / 80,713.44-121,157.28-61,205.04

Finding the Fourth Proportional to 80,713.44, 121,157.28 and 61,205.04

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Solution

The fourth proportional to 80,713.44, 121,157.28 and 61,205.04 is: 91,873.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,713.44 : 121,157.28 = 61,205.04 : x
  2. Step 2: Convert to fraction form
    80,713.44/121,157.28 = 61,205.04/x
  3. Step 3: Cross multiply
    80,713.44x = 121,157.28 × 61,205.04
  4. Step 4: Simplify right side
    80,713.44x = 7,415,436,168.69
  5. Step 5: Solve for x
    x = 7,415,436,168.69/80,713.44
  6. Step 6: Final answer
    x = 91,873.62

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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.