Home / 90,695.32-135,645.06-80,770.06

Finding the Fourth Proportional to 90,695.32, 135,645.06 and 80,770.06

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Solution

The fourth proportional to 90,695.32, 135,645.06 and 80,770.06 is: 120,800.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,695.32 : 135,645.06 = 80,770.06 : x
  2. Step 2: Convert to fraction form
    90,695.32/135,645.06 = 80,770.06/x
  3. Step 3: Cross multiply
    90,695.32x = 135,645.06 × 80,770.06
  4. Step 4: Simplify right side
    90,695.32x = 10,956,059,634.90
  5. Step 5: Solve for x
    x = 10,956,059,634.90/90,695.32
  6. Step 6: Final answer
    x = 120,800.72

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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.