Home / 170,662.20-256,121.30-87,513.40

Finding the Fourth Proportional to 170,662.20, 256,121.30 and 87,513.40

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Solution

The fourth proportional to 170,662.20, 256,121.30 and 87,513.40 is: 131,335.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,662.20 : 256,121.30 = 87,513.40 : x
  2. Step 2: Convert to fraction form
    170,662.20/256,121.30 = 87,513.40/x
  3. Step 3: Cross multiply
    170,662.20x = 256,121.30 × 87,513.40
  4. Step 4: Simplify right side
    170,662.20x = 22,414,045,775.42
  5. Step 5: Solve for x
    x = 22,414,045,775.42/170,662.20
  6. Step 6: Final answer
    x = 131,335.74

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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.