Home / 120,279.92-165,982.14-66,567.20

Finding the Fourth Proportional to 120,279.92, 165,982.14 and 66,567.20

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Solution

The fourth proportional to 120,279.92, 165,982.14 and 66,567.20 is: 91,860.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,279.92 : 165,982.14 = 66,567.20 : x
  2. Step 2: Convert to fraction form
    120,279.92/165,982.14 = 66,567.20/x
  3. Step 3: Cross multiply
    120,279.92x = 165,982.14 × 66,567.20
  4. Step 4: Simplify right side
    120,279.92x = 11,048,965,479.90
  5. Step 5: Solve for x
    x = 11,048,965,479.90/120,279.92
  6. Step 6: Final answer
    x = 91,860.44

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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.