Home / 117,205.38-161,758.17-66,220.65

Finding the Fourth Proportional to 117,205.38, 161,758.17 and 66,220.65

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Solution

The fourth proportional to 117,205.38, 161,758.17 and 66,220.65 is: 91,392.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,205.38 : 161,758.17 = 66,220.65 : x
  2. Step 2: Convert to fraction form
    117,205.38/161,758.17 = 66,220.65/x
  3. Step 3: Cross multiply
    117,205.38x = 161,758.17 × 66,220.65
  4. Step 4: Simplify right side
    117,205.38x = 10,711,731,160.21
  5. Step 5: Solve for x
    x = 10,711,731,160.21/117,205.38
  6. Step 6: Final answer
    x = 91,392.83

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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.