Home / 161,831.30-223,422.86-143,876.61

Finding the Fourth Proportional to 161,831.30, 223,422.86 and 143,876.61

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Solution

The fourth proportional to 161,831.30, 223,422.86 and 143,876.61 is: 198,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,831.30 : 223,422.86 = 143,876.61 : x
  2. Step 2: Convert to fraction form
    161,831.30/223,422.86 = 143,876.61/x
  3. Step 3: Cross multiply
    161,831.30x = 223,422.86 × 143,876.61
  4. Step 4: Simplify right side
    161,831.30x = 32,145,322,973.92
  5. Step 5: Solve for x
    x = 32,145,322,973.92/161,831.30
  6. Step 6: Final answer
    x = 198,634.78

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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.