Home / 143,979.36-198,689.58-80,318.22

Finding the Fourth Proportional to 143,979.36, 198,689.58 and 80,318.22

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Solution

The fourth proportional to 143,979.36, 198,689.58 and 80,318.22 is: 110,838.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,979.36 : 198,689.58 = 80,318.22 : x
  2. Step 2: Convert to fraction form
    143,979.36/198,689.58 = 80,318.22/x
  3. Step 3: Cross multiply
    143,979.36x = 198,689.58 × 80,318.22
  4. Step 4: Simplify right side
    143,979.36x = 15,958,393,398.15
  5. Step 5: Solve for x
    x = 15,958,393,398.15/143,979.36
  6. Step 6: Final answer
    x = 110,838.06

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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.