Home / 143,785.08-198,424.20-83,391.53

Finding the Fourth Proportional to 143,785.08, 198,424.20 and 83,391.53

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Solution

The fourth proportional to 143,785.08, 198,424.20 and 83,391.53 is: 115,080.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,785.08 : 198,424.20 = 83,391.53 : x
  2. Step 2: Convert to fraction form
    143,785.08/198,424.20 = 83,391.53/x
  3. Step 3: Cross multiply
    143,785.08x = 198,424.20 × 83,391.53
  4. Step 4: Simplify right side
    143,785.08x = 16,546,896,634.91
  5. Step 5: Solve for x
    x = 16,546,896,634.91/143,785.08
  6. Step 6: Final answer
    x = 115,080.76

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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.