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Finding the Fourth Proportional to 171,220.70, 257,061.90 and 100,216.10

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Solution

The fourth proportional to 171,220.70, 257,061.90 and 100,216.10 is: 150,459.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,220.70 : 257,061.90 = 100,216.10 : x
  2. Step 2: Convert to fraction form
    171,220.70/257,061.90 = 100,216.10/x
  3. Step 3: Cross multiply
    171,220.70x = 257,061.90 × 100,216.10
  4. Step 4: Simplify right side
    171,220.70x = 25,761,741,076.59
  5. Step 5: Solve for x
    x = 25,761,741,076.59/171,220.70
  6. Step 6: Final answer
    x = 150,459.27

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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.