Home / 187,028.80-280,385.28-81,767.68

Finding the Fourth Proportional to 187,028.80, 280,385.28 and 81,767.68

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Solution

The fourth proportional to 187,028.80, 280,385.28 and 81,767.68 is: 122,582.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,028.80 : 280,385.28 = 81,767.68 : x
  2. Step 2: Convert to fraction form
    187,028.80/280,385.28 = 81,767.68/x
  3. Step 3: Cross multiply
    187,028.80x = 280,385.28 × 81,767.68
  4. Step 4: Simplify right side
    187,028.80x = 22,926,453,851.75
  5. Step 5: Solve for x
    x = 22,926,453,851.75/187,028.80
  6. Step 6: Final answer
    x = 122,582.48

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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.