Home / 185,961.40-278,942.10-111,311.80

Finding the Fourth Proportional to 185,961.40, 278,942.10 and 111,311.80

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Solution

The fourth proportional to 185,961.40, 278,942.10 and 111,311.80 is: 166,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,961.40 : 278,942.10 = 111,311.80 : x
  2. Step 2: Convert to fraction form
    185,961.40/278,942.10 = 111,311.80/x
  3. Step 3: Cross multiply
    185,961.40x = 278,942.10 × 111,311.80
  4. Step 4: Simplify right side
    185,961.40x = 31,049,547,246.78
  5. Step 5: Solve for x
    x = 31,049,547,246.78/185,961.40
  6. Step 6: Final answer
    x = 166,967.70

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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.