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Finding the Fourth Proportional to 159,482.34, 239,014.71 and 80,553.78

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Solution

The fourth proportional to 159,482.34, 239,014.71 and 80,553.78 is: 120,725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,482.34 : 239,014.71 = 80,553.78 : x
  2. Step 2: Convert to fraction form
    159,482.34/239,014.71 = 80,553.78/x
  3. Step 3: Cross multiply
    159,482.34x = 239,014.71 × 80,553.78
  4. Step 4: Simplify right side
    159,482.34x = 19,253,538,366.10
  5. Step 5: Solve for x
    x = 19,253,538,366.10/159,482.34
  6. Step 6: Final answer
    x = 120,725.21

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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.