Home / 111,020.18-166,240.40-72,949.75

Finding the Fourth Proportional to 111,020.18, 166,240.40 and 72,949.75

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Solution

The fourth proportional to 111,020.18, 166,240.40 and 72,949.75 is: 109,234.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,020.18 : 166,240.40 = 72,949.75 : x
  2. Step 2: Convert to fraction form
    111,020.18/166,240.40 = 72,949.75/x
  3. Step 3: Cross multiply
    111,020.18x = 166,240.40 × 72,949.75
  4. Step 4: Simplify right side
    111,020.18x = 12,127,194,788.70
  5. Step 5: Solve for x
    x = 12,127,194,788.70/111,020.18
  6. Step 6: Final answer
    x = 109,234.15

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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.