Home / 134,979.20-202,555.20-78,819.20

Finding the Fourth Proportional to 134,979.20, 202,555.20 and 78,819.20

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Solution

The fourth proportional to 134,979.20, 202,555.20 and 78,819.20 is: 118,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,979.20 : 202,555.20 = 78,819.20 : x
  2. Step 2: Convert to fraction form
    134,979.20/202,555.20 = 78,819.20/x
  3. Step 3: Cross multiply
    134,979.20x = 202,555.20 × 78,819.20
  4. Step 4: Simplify right side
    134,979.20x = 15,965,238,819.84
  5. Step 5: Solve for x
    x = 15,965,238,819.84/134,979.20
  6. Step 6: Final answer
    x = 118,279.25

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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.