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Finding the Fourth Proportional to 136,750.65, 204,869.67 and 80,422.41

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Solution

The fourth proportional to 136,750.65, 204,869.67 and 80,422.41 is: 120,482.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,750.65 : 204,869.67 = 80,422.41 : x
  2. Step 2: Convert to fraction form
    136,750.65/204,869.67 = 80,422.41/x
  3. Step 3: Cross multiply
    136,750.65x = 204,869.67 × 80,422.41
  4. Step 4: Simplify right side
    136,750.65x = 16,476,112,597.30
  5. Step 5: Solve for x
    x = 16,476,112,597.30/136,750.65
  6. Step 6: Final answer
    x = 120,482.88

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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.