Home / 143,687.40-198,288.59-80,025.18

Finding the Fourth Proportional to 143,687.40, 198,288.59 and 80,025.18

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Solution

The fourth proportional to 143,687.40, 198,288.59 and 80,025.18 is: 110,434.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,687.40 : 198,288.59 = 80,025.18 : x
  2. Step 2: Convert to fraction form
    143,687.40/198,288.59 = 80,025.18/x
  3. Step 3: Cross multiply
    143,687.40x = 198,288.59 × 80,025.18
  4. Step 4: Simplify right side
    143,687.40x = 15,868,080,106.70
  5. Step 5: Solve for x
    x = 15,868,080,106.70/143,687.40
  6. Step 6: Final answer
    x = 110,434.74

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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.