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Finding the Fourth Proportional to 111,153.60, 166,908.60 and 102,967.20

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Solution

The fourth proportional to 111,153.60, 166,908.60 and 102,967.20 is: 154,615.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,153.60 : 166,908.60 = 102,967.20 : x
  2. Step 2: Convert to fraction form
    111,153.60/166,908.60 = 102,967.20/x
  3. Step 3: Cross multiply
    111,153.60x = 166,908.60 × 102,967.20
  4. Step 4: Simplify right side
    111,153.60x = 17,186,111,197.92
  5. Step 5: Solve for x
    x = 17,186,111,197.92/111,153.60
  6. Step 6: Final answer
    x = 154,615.88

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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.