Home / 120,186.12-165,853.80-66,469.80

Finding the Fourth Proportional to 120,186.12, 165,853.80 and 66,469.80

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Solution

The fourth proportional to 120,186.12, 165,853.80 and 66,469.80 is: 91,726.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,186.12 : 165,853.80 = 66,469.80 : x
  2. Step 2: Convert to fraction form
    120,186.12/165,853.80 = 66,469.80/x
  3. Step 3: Cross multiply
    120,186.12x = 165,853.80 × 66,469.80
  4. Step 4: Simplify right side
    120,186.12x = 11,024,268,915.24
  5. Step 5: Solve for x
    x = 11,024,268,915.24/120,186.12
  6. Step 6: Final answer
    x = 91,726.64

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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.