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Finding the Fourth Proportional to 111,091.20, 166,809.60 and 64,435.20

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Solution

The fourth proportional to 111,091.20, 166,809.60 and 64,435.20 is: 96,753.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,091.20 : 166,809.60 = 64,435.20 : x
  2. Step 2: Convert to fraction form
    111,091.20/166,809.60 = 64,435.20/x
  3. Step 3: Cross multiply
    111,091.20x = 166,809.60 × 64,435.20
  4. Step 4: Simplify right side
    111,091.20x = 10,748,409,937.92
  5. Step 5: Solve for x
    x = 10,748,409,937.92/111,091.20
  6. Step 6: Final answer
    x = 96,753.03

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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.