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Finding the Fourth Proportional to 111,929.80, 167,894.70 and 100,654.60

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Solution

The fourth proportional to 111,929.80, 167,894.70 and 100,654.60 is: 150,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,929.80 : 167,894.70 = 100,654.60 : x
  2. Step 2: Convert to fraction form
    111,929.80/167,894.70 = 100,654.60/x
  3. Step 3: Cross multiply
    111,929.80x = 167,894.70 × 100,654.60
  4. Step 4: Simplify right side
    111,929.80x = 16,899,373,870.62
  5. Step 5: Solve for x
    x = 16,899,373,870.62/111,929.80
  6. Step 6: Final answer
    x = 150,981.90

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1.5x scale

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.