Home / 123,814.80-185,722.20-30,320.55

Finding the Fourth Proportional to 123,814.80, 185,722.20 and 30,320.55

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Solution

The fourth proportional to 123,814.80, 185,722.20 and 30,320.55 is: 45,480.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,814.80 : 185,722.20 = 30,320.55 : x
  2. Step 2: Convert to fraction form
    123,814.80/185,722.20 = 30,320.55/x
  3. Step 3: Cross multiply
    123,814.80x = 185,722.20 × 30,320.55
  4. Step 4: Simplify right side
    123,814.80x = 5,631,199,251.21
  5. Step 5: Solve for x
    x = 5,631,199,251.21/123,814.80
  6. Step 6: Final answer
    x = 45,480.83

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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.