Home / 124,412.20-186,618.30-82,421.80

Finding the Fourth Proportional to 124,412.20, 186,618.30 and 82,421.80

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Solution

The fourth proportional to 124,412.20, 186,618.30 and 82,421.80 is: 123,632.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,412.20 : 186,618.30 = 82,421.80 : x
  2. Step 2: Convert to fraction form
    124,412.20/186,618.30 = 82,421.80/x
  3. Step 3: Cross multiply
    124,412.20x = 186,618.30 × 82,421.80
  4. Step 4: Simplify right side
    124,412.20x = 15,381,416,198.94
  5. Step 5: Solve for x
    x = 15,381,416,198.94/124,412.20
  6. Step 6: Final answer
    x = 123,632.70

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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.