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Finding the Fourth Proportional to 106,327.20, 159,728.40 and 88,831.20

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Solution

The fourth proportional to 106,327.20, 159,728.40 and 88,831.20 is: 133,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,327.20 : 159,728.40 = 88,831.20 : x
  2. Step 2: Convert to fraction form
    106,327.20/159,728.40 = 88,831.20/x
  3. Step 3: Cross multiply
    106,327.20x = 159,728.40 × 88,831.20
  4. Step 4: Simplify right side
    106,327.20x = 14,188,865,446.08
  5. Step 5: Solve for x
    x = 14,188,865,446.08/106,327.20
  6. Step 6: Final answer
    x = 133,445.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.