Home / 149,741.12-206,636.84-81,760.97

Finding the Fourth Proportional to 149,741.12, 206,636.84 and 81,760.97

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Solution

The fourth proportional to 149,741.12, 206,636.84 and 81,760.97 is: 112,826.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,741.12 : 206,636.84 = 81,760.97 : x
  2. Step 2: Convert to fraction form
    149,741.12/206,636.84 = 81,760.97/x
  3. Step 3: Cross multiply
    149,741.12x = 206,636.84 × 81,760.97
  4. Step 4: Simplify right side
    149,741.12x = 16,894,827,034.15
  5. Step 5: Solve for x
    x = 16,894,827,034.15/149,741.12
  6. Step 6: Final answer
    x = 112,826.91

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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.