Home / 118,708.74-163,819.98-64,992.78

Finding the Fourth Proportional to 118,708.74, 163,819.98 and 64,992.78

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Solution

The fourth proportional to 118,708.74, 163,819.98 and 64,992.78 is: 89,691.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,708.74 : 163,819.98 = 64,992.78 : x
  2. Step 2: Convert to fraction form
    118,708.74/163,819.98 = 64,992.78/x
  3. Step 3: Cross multiply
    118,708.74x = 163,819.98 × 64,992.78
  4. Step 4: Simplify right side
    118,708.74x = 10,647,115,919.74
  5. Step 5: Solve for x
    x = 10,647,115,919.74/118,708.74
  6. Step 6: Final answer
    x = 89,691.09

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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.