Home / 120,034.18-165,642.70-66,318.04

Finding the Fourth Proportional to 120,034.18, 165,642.70 and 66,318.04

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Solution

The fourth proportional to 120,034.18, 165,642.70 and 66,318.04 is: 91,516.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,034.18 : 165,642.70 = 66,318.04 : x
  2. Step 2: Convert to fraction form
    120,034.18/165,642.70 = 66,318.04/x
  3. Step 3: Cross multiply
    120,034.18x = 165,642.70 × 66,318.04
  4. Step 4: Simplify right side
    120,034.18x = 10,985,099,183.39
  5. Step 5: Solve for x
    x = 10,985,099,183.39/120,034.18
  6. Step 6: Final answer
    x = 91,516.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.