Home / 121,286.03-181,961.84-68,732.42

Finding the Fourth Proportional to 121,286.03, 181,961.84 and 68,732.42

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Solution

The fourth proportional to 121,286.03, 181,961.84 and 68,732.42 is: 103,117.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,286.03 : 181,961.84 = 68,732.42 : x
  2. Step 2: Convert to fraction form
    121,286.03/181,961.84 = 68,732.42/x
  3. Step 3: Cross multiply
    121,286.03x = 181,961.84 × 68,732.42
  4. Step 4: Simplify right side
    121,286.03x = 12,506,676,872.87
  5. Step 5: Solve for x
    x = 12,506,676,872.87/121,286.03
  6. Step 6: Final answer
    x = 103,117.21

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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.