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Finding the Fourth Proportional to 192,587.96, 288,918.12 and 87,414.32

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Solution

The fourth proportional to 192,587.96, 288,918.12 and 87,414.32 is: 131,137.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,587.96 : 288,918.12 = 87,414.32 : x
  2. Step 2: Convert to fraction form
    192,587.96/288,918.12 = 87,414.32/x
  3. Step 3: Cross multiply
    192,587.96x = 288,918.12 × 87,414.32
  4. Step 4: Simplify right side
    192,587.96x = 25,255,580,995.48
  5. Step 5: Solve for x
    x = 25,255,580,995.48/192,587.96
  6. Step 6: Final answer
    x = 131,137.90

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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.