Home / 149,425.52-206,207.38-81,442.55

Finding the Fourth Proportional to 149,425.52, 206,207.38 and 81,442.55

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Solution

The fourth proportional to 149,425.52, 206,207.38 and 81,442.55 is: 112,390.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,425.52 : 206,207.38 = 81,442.55 : x
  2. Step 2: Convert to fraction form
    149,425.52/206,207.38 = 81,442.55/x
  3. Step 3: Cross multiply
    149,425.52x = 206,207.38 × 81,442.55
  4. Step 4: Simplify right side
    149,425.52x = 16,794,054,241.95
  5. Step 5: Solve for x
    x = 16,794,054,241.95/149,425.52
  6. Step 6: Final answer
    x = 112,390.80

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1.5x scale

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.