Home / 123,780.20-185,670.30-110,949.80

Finding the Fourth Proportional to 123,780.20, 185,670.30 and 110,949.80

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Solution

The fourth proportional to 123,780.20, 185,670.30 and 110,949.80 is: 166,424.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,780.20 : 185,670.30 = 110,949.80 : x
  2. Step 2: Convert to fraction form
    123,780.20/185,670.30 = 110,949.80/x
  3. Step 3: Cross multiply
    123,780.20x = 185,670.30 × 110,949.80
  4. Step 4: Simplify right side
    123,780.20x = 20,600,082,650.94
  5. Step 5: Solve for x
    x = 20,600,082,650.94/123,780.20
  6. Step 6: Final answer
    x = 166,424.70

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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.