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Finding the Fourth Proportional to 120,366.56, 180,482.30 and 82,458.66

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Solution

The fourth proportional to 120,366.56, 180,482.30 and 82,458.66 is: 123,641.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,366.56 : 180,482.30 = 82,458.66 : x
  2. Step 2: Convert to fraction form
    120,366.56/180,482.30 = 82,458.66/x
  3. Step 3: Cross multiply
    120,366.56x = 180,482.30 × 82,458.66
  4. Step 4: Simplify right side
    120,366.56x = 14,882,328,402.16
  5. Step 5: Solve for x
    x = 14,882,328,402.16/120,366.56
  6. Step 6: Final answer
    x = 123,641.72

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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.