Home / 141,819.20-212,498.40-89,134.40

Finding the Fourth Proportional to 141,819.20, 212,498.40 and 89,134.40

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Solution

The fourth proportional to 141,819.20, 212,498.40 and 89,134.40 is: 133,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,819.20 : 212,498.40 = 89,134.40 : x
  2. Step 2: Convert to fraction form
    141,819.20/212,498.40 = 89,134.40/x
  3. Step 3: Cross multiply
    141,819.20x = 212,498.40 × 89,134.40
  4. Step 4: Simplify right side
    141,819.20x = 18,940,917,384.96
  5. Step 5: Solve for x
    x = 18,940,917,384.96/141,819.20
  6. Step 6: Final answer
    x = 133,556.79

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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.