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Finding the Fourth Proportional to 111,106.75, 166,660.13 and 28,000.75

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Solution

The fourth proportional to 111,106.75, 166,660.13 and 28,000.75 is: 42,001.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,106.75 : 166,660.13 = 28,000.75 : x
  2. Step 2: Convert to fraction form
    111,106.75/166,660.13 = 28,000.75/x
  3. Step 3: Cross multiply
    111,106.75x = 166,660.13 × 28,000.75
  4. Step 4: Simplify right side
    111,106.75x = 4,666,608,635.10
  5. Step 5: Solve for x
    x = 4,666,608,635.10/111,106.75
  6. Step 6: Final answer
    x = 42,001.13

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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.