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Finding the Fourth Proportional to 195,310.80, 292,908.60 and 76,942.80

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Solution

The fourth proportional to 195,310.80, 292,908.60 and 76,942.80 is: 115,391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,310.80 : 292,908.60 = 76,942.80 : x
  2. Step 2: Convert to fraction form
    195,310.80/292,908.60 = 76,942.80/x
  3. Step 3: Cross multiply
    195,310.80x = 292,908.60 × 76,942.80
  4. Step 4: Simplify right side
    195,310.80x = 22,537,207,828.08
  5. Step 5: Solve for x
    x = 22,537,207,828.08/195,310.80
  6. Step 6: Final answer
    x = 115,391.51

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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.