Home / 170,905.40-256,255.70-87,961.40

Finding the Fourth Proportional to 170,905.40, 256,255.70 and 87,961.40

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Solution

The fourth proportional to 170,905.40, 256,255.70 and 87,961.40 is: 131,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,905.40 : 256,255.70 = 87,961.40 : x
  2. Step 2: Convert to fraction form
    170,905.40/256,255.70 = 87,961.40/x
  3. Step 3: Cross multiply
    170,905.40x = 256,255.70 × 87,961.40
  4. Step 4: Simplify right side
    170,905.40x = 22,540,610,129.98
  5. Step 5: Solve for x
    x = 22,540,610,129.98/170,905.40
  6. Step 6: Final answer
    x = 131,889.40

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1.5x scale

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.