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Finding the Fourth Proportional to 163,691.80, 245,408.10 and 89,819.80

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Solution

The fourth proportional to 163,691.80, 245,408.10 and 89,819.80 is: 134,658.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,691.80 : 245,408.10 = 89,819.80 : x
  2. Step 2: Convert to fraction form
    163,691.80/245,408.10 = 89,819.80/x
  3. Step 3: Cross multiply
    163,691.80x = 245,408.10 × 89,819.80
  4. Step 4: Simplify right side
    163,691.80x = 22,042,506,460.38
  5. Step 5: Solve for x
    x = 22,042,506,460.38/163,691.80
  6. Step 6: Final answer
    x = 134,658.59

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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.