Home / 149,831.72-206,768.08-81,849.20

Finding the Fourth Proportional to 149,831.72, 206,768.08 and 81,849.20

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Solution

The fourth proportional to 149,831.72, 206,768.08 and 81,849.20 is: 112,952.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,831.72 : 206,768.08 = 81,849.20 : x
  2. Step 2: Convert to fraction form
    149,831.72/206,768.08 = 81,849.20/x
  3. Step 3: Cross multiply
    149,831.72x = 206,768.08 × 81,849.20
  4. Step 4: Simplify right side
    149,831.72x = 16,923,801,933.54
  5. Step 5: Solve for x
    x = 16,923,801,933.54/149,831.72
  6. Step 6: Final answer
    x = 112,952.06

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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.