Home / 120,291.38-165,995.22-66,573.20

Finding the Fourth Proportional to 120,291.38, 165,995.22 and 66,573.20

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Solution

The fourth proportional to 120,291.38, 165,995.22 and 66,573.20 is: 91,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,291.38 : 165,995.22 = 66,573.20 : x
  2. Step 2: Convert to fraction form
    120,291.38/165,995.22 = 66,573.20/x
  3. Step 3: Cross multiply
    120,291.38x = 165,995.22 × 66,573.20
  4. Step 4: Simplify right side
    120,291.38x = 11,050,832,980.10
  5. Step 5: Solve for x
    x = 11,050,832,980.10/120,291.38
  6. Step 6: Final answer
    x = 91,867.21

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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.