Home / 111,310.38-153,614.61-66,015.18

Finding the Fourth Proportional to 111,310.38, 153,614.61 and 66,015.18

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Solution

The fourth proportional to 111,310.38, 153,614.61 and 66,015.18 is: 91,104.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,310.38 : 153,614.61 = 66,015.18 : x
  2. Step 2: Convert to fraction form
    111,310.38/153,614.61 = 66,015.18/x
  3. Step 3: Cross multiply
    111,310.38x = 153,614.61 × 66,015.18
  4. Step 4: Simplify right side
    111,310.38x = 10,140,896,129.78
  5. Step 5: Solve for x
    x = 10,140,896,129.78/111,310.38
  6. Step 6: Final answer
    x = 91,104.68

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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.