Home / 149,639.76-206,507.25-81,661.11

Finding the Fourth Proportional to 149,639.76, 206,507.25 and 81,661.11

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Solution

The fourth proportional to 149,639.76, 206,507.25 and 81,661.11 is: 112,694.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,639.76 : 206,507.25 = 81,661.11 : x
  2. Step 2: Convert to fraction form
    149,639.76/206,507.25 = 81,661.11/x
  3. Step 3: Cross multiply
    149,639.76x = 206,507.25 × 81,661.11
  4. Step 4: Simplify right side
    149,639.76x = 16,863,610,951.82
  5. Step 5: Solve for x
    x = 16,863,610,951.82/149,639.76
  6. Step 6: Final answer
    x = 112,694.72

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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.