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Finding the Fourth Proportional to 110,905.40, 166,355.60 and 75,277.80

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Solution

The fourth proportional to 110,905.40, 166,355.60 and 75,277.80 is: 112,915.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,905.40 : 166,355.60 = 75,277.80 : x
  2. Step 2: Convert to fraction form
    110,905.40/166,355.60 = 75,277.80/x
  3. Step 3: Cross multiply
    110,905.40x = 166,355.60 × 75,277.80
  4. Step 4: Simplify right side
    110,905.40x = 12,522,883,585.68
  5. Step 5: Solve for x
    x = 12,522,883,585.68/110,905.40
  6. Step 6: Final answer
    x = 112,915.00

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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.