Home / 134,819.57-186,049.83-74,390.78

Finding the Fourth Proportional to 134,819.57, 186,049.83 and 74,390.78

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Solution

The fourth proportional to 134,819.57, 186,049.83 and 74,390.78 is: 102,658.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,819.57 : 186,049.83 = 74,390.78 : x
  2. Step 2: Convert to fraction form
    134,819.57/186,049.83 = 74,390.78/x
  3. Step 3: Cross multiply
    134,819.57x = 186,049.83 × 74,390.78
  4. Step 4: Simplify right side
    134,819.57x = 13,840,391,042.32
  5. Step 5: Solve for x
    x = 13,840,391,042.32/134,819.57
  6. Step 6: Final answer
    x = 102,658.62

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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.