Home / 143,865.47-198,471.36-137,195.12

Finding the Fourth Proportional to 143,865.47, 198,471.36 and 137,195.12

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Solution

The fourth proportional to 143,865.47, 198,471.36 and 137,195.12 is: 189,269.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,865.47 : 198,471.36 = 137,195.12 : x
  2. Step 2: Convert to fraction form
    143,865.47/198,471.36 = 137,195.12/x
  3. Step 3: Cross multiply
    143,865.47x = 198,471.36 × 137,195.12
  4. Step 4: Simplify right side
    143,865.47x = 27,229,300,373.43
  5. Step 5: Solve for x
    x = 27,229,300,373.43/143,865.47
  6. Step 6: Final answer
    x = 189,269.19

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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.