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Finding the Fourth Proportional to 118,082.98, 177,059.47 and 80,685.28

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Solution

The fourth proportional to 118,082.98, 177,059.47 and 80,685.28 is: 120,983.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,082.98 : 177,059.47 = 80,685.28 : x
  2. Step 2: Convert to fraction form
    118,082.98/177,059.47 = 80,685.28/x
  3. Step 3: Cross multiply
    118,082.98x = 177,059.47 × 80,685.28
  4. Step 4: Simplify right side
    118,082.98x = 14,286,093,084.50
  5. Step 5: Solve for x
    x = 14,286,093,084.50/118,082.98
  6. Step 6: Final answer
    x = 120,983.51

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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.