Home / 220,442.20-330,836.10-102,128.20

Finding the Fourth Proportional to 220,442.20, 330,836.10 and 102,128.20

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Solution

The fourth proportional to 220,442.20, 330,836.10 and 102,128.20 is: 153,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,442.20 : 330,836.10 = 102,128.20 : x
  2. Step 2: Convert to fraction form
    220,442.20/330,836.10 = 102,128.20/x
  3. Step 3: Cross multiply
    220,442.20x = 330,836.10 × 102,128.20
  4. Step 4: Simplify right side
    220,442.20x = 33,787,695,388.02
  5. Step 5: Solve for x
    x = 33,787,695,388.02/220,442.20
  6. Step 6: Final answer
    x = 153,272.36

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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.