Home / 123,628.20-185,264.70-76,853.80

Finding the Fourth Proportional to 123,628.20, 185,264.70 and 76,853.80

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Solution

The fourth proportional to 123,628.20, 185,264.70 and 76,853.80 is: 115,170.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,628.20 : 185,264.70 = 76,853.80 : x
  2. Step 2: Convert to fraction form
    123,628.20/185,264.70 = 76,853.80/x
  3. Step 3: Cross multiply
    123,628.20x = 185,264.70 × 76,853.80
  4. Step 4: Simplify right side
    123,628.20x = 14,238,296,200.86
  5. Step 5: Solve for x
    x = 14,238,296,200.86/123,628.20
  6. Step 6: Final answer
    x = 115,170.29

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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.