Home / 143,831.31-198,463.50-83,377.19

Finding the Fourth Proportional to 143,831.31, 198,463.50 and 83,377.19

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Solution

The fourth proportional to 143,831.31, 198,463.50 and 83,377.19 is: 115,046.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,831.31 : 198,463.50 = 83,377.19 : x
  2. Step 2: Convert to fraction form
    143,831.31/198,463.50 = 83,377.19/x
  3. Step 3: Cross multiply
    143,831.31x = 198,463.50 × 83,377.19
  4. Step 4: Simplify right side
    143,831.31x = 16,547,328,947.57
  5. Step 5: Solve for x
    x = 16,547,328,947.57/143,831.31
  6. Step 6: Final answer
    x = 115,046.78

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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.