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Finding the Fourth Proportional to 171,115.80, 256,284.90 and 108,130.20

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Solution

The fourth proportional to 171,115.80, 256,284.90 and 108,130.20 is: 161,949.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,115.80 : 256,284.90 = 108,130.20 : x
  2. Step 2: Convert to fraction form
    171,115.80/256,284.90 = 108,130.20/x
  3. Step 3: Cross multiply
    171,115.80x = 256,284.90 × 108,130.20
  4. Step 4: Simplify right side
    171,115.80x = 27,712,137,493.98
  5. Step 5: Solve for x
    x = 27,712,137,493.98/171,115.80
  6. Step 6: Final answer
    x = 161,949.61

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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.