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Finding the Fourth Proportional to 171,005.78, 256,370.27 and 71,240.92

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Solution

The fourth proportional to 171,005.78, 256,370.27 and 71,240.92 is: 106,803.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,005.78 : 256,370.27 = 71,240.92 : x
  2. Step 2: Convert to fraction form
    171,005.78/256,370.27 = 71,240.92/x
  3. Step 3: Cross multiply
    171,005.78x = 256,370.27 × 71,240.92
  4. Step 4: Simplify right side
    171,005.78x = 18,264,052,898.32
  5. Step 5: Solve for x
    x = 18,264,052,898.32/171,005.78
  6. Step 6: Final answer
    x = 106,803.72

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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.