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Finding the Fourth Proportional to 111,740.40, 167,956.20 and 109,666.80

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Solution

The fourth proportional to 111,740.40, 167,956.20 and 109,666.80 is: 164,839.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,740.40 : 167,956.20 = 109,666.80 : x
  2. Step 2: Convert to fraction form
    111,740.40/167,956.20 = 109,666.80/x
  3. Step 3: Cross multiply
    111,740.40x = 167,956.20 × 109,666.80
  4. Step 4: Simplify right side
    111,740.40x = 18,419,218,994.16
  5. Step 5: Solve for x
    x = 18,419,218,994.16/111,740.40
  6. Step 6: Final answer
    x = 164,839.39

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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.