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Finding the Fourth Proportional to 110,980.13, 166,831.07 and 89,033.60

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Solution

The fourth proportional to 110,980.13, 166,831.07 and 89,033.60 is: 133,839.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,980.13 : 166,831.07 = 89,033.60 : x
  2. Step 2: Convert to fraction form
    110,980.13/166,831.07 = 89,033.60/x
  3. Step 3: Cross multiply
    110,980.13x = 166,831.07 × 89,033.60
  4. Step 4: Simplify right side
    110,980.13x = 14,853,570,308.78
  5. Step 5: Solve for x
    x = 14,853,570,308.78/110,980.13
  6. Step 6: Final answer
    x = 133,839.91

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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.