Home / 141,649.20-212,279.40-115,405.20

Finding the Fourth Proportional to 141,649.20, 212,279.40 and 115,405.20

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Solution

The fourth proportional to 141,649.20, 212,279.40 and 115,405.20 is: 172,949.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,649.20 : 212,279.40 = 115,405.20 : x
  2. Step 2: Convert to fraction form
    141,649.20/212,279.40 = 115,405.20/x
  3. Step 3: Cross multiply
    141,649.20x = 212,279.40 × 115,405.20
  4. Step 4: Simplify right side
    141,649.20x = 24,498,146,612.88
  5. Step 5: Solve for x
    x = 24,498,146,612.88/141,649.20
  6. Step 6: Final answer
    x = 172,949.42

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1.5x scale

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.