Home / 149,383.62-206,147.52-81,403.56

Finding the Fourth Proportional to 149,383.62, 206,147.52 and 81,403.56

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Solution

The fourth proportional to 149,383.62, 206,147.52 and 81,403.56 is: 112,335.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,383.62 : 206,147.52 = 81,403.56 : x
  2. Step 2: Convert to fraction form
    149,383.62/206,147.52 = 81,403.56/x
  3. Step 3: Cross multiply
    149,383.62x = 206,147.52 × 81,403.56
  4. Step 4: Simplify right side
    149,383.62x = 16,781,142,013.17
  5. Step 5: Solve for x
    x = 16,781,142,013.17/149,383.62
  6. Step 6: Final answer
    x = 112,335.89

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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.