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Finding the Fourth Proportional to 111,808.70, 167,421.45 and 88,286.30

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Solution

The fourth proportional to 111,808.70, 167,421.45 and 88,286.30 is: 132,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,808.70 : 167,421.45 = 88,286.30 : x
  2. Step 2: Convert to fraction form
    111,808.70/167,421.45 = 88,286.30/x
  3. Step 3: Cross multiply
    111,808.70x = 167,421.45 × 88,286.30
  4. Step 4: Simplify right side
    111,808.70x = 14,781,020,361.14
  5. Step 5: Solve for x
    x = 14,781,020,361.14/111,808.70
  6. Step 6: Final answer
    x = 132,199.20

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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.