Home / 147,720.78-221,250.69-68,716.62

Finding the Fourth Proportional to 147,720.78, 221,250.69 and 68,716.62

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Solution

The fourth proportional to 147,720.78, 221,250.69 and 68,716.62 is: 102,921.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,720.78 : 221,250.69 = 68,716.62 : x
  2. Step 2: Convert to fraction form
    147,720.78/221,250.69 = 68,716.62/x
  3. Step 3: Cross multiply
    147,720.78x = 221,250.69 × 68,716.62
  4. Step 4: Simplify right side
    147,720.78x = 15,203,599,589.47
  5. Step 5: Solve for x
    x = 15,203,599,589.47/147,720.78
  6. Step 6: Final answer
    x = 102,921.20

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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.