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Finding the Fourth Proportional to 124,859.20, 187,288.80 and 82,868.80

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Solution

The fourth proportional to 124,859.20, 187,288.80 and 82,868.80 is: 124,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,859.20 : 187,288.80 = 82,868.80 : x
  2. Step 2: Convert to fraction form
    124,859.20/187,288.80 = 82,868.80/x
  3. Step 3: Cross multiply
    124,859.20x = 187,288.80 × 82,868.80
  4. Step 4: Simplify right side
    124,859.20x = 15,520,398,109.44
  5. Step 5: Solve for x
    x = 15,520,398,109.44/124,859.20
  6. Step 6: Final answer
    x = 124,303.20

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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.