Home / 180,961.20-249,714.68-100,388.52

Finding the Fourth Proportional to 180,961.20, 249,714.68 and 100,388.52

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Solution

The fourth proportional to 180,961.20, 249,714.68 and 100,388.52 is: 138,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,961.20 : 249,714.68 = 100,388.52 : x
  2. Step 2: Convert to fraction form
    180,961.20/249,714.68 = 100,388.52/x
  3. Step 3: Cross multiply
    180,961.20x = 249,714.68 × 100,388.52
  4. Step 4: Simplify right side
    180,961.20x = 25,068,487,147.47
  5. Step 5: Solve for x
    x = 25,068,487,147.47/180,961.20
  6. Step 6: Final answer
    x = 138,529.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.