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Finding the Fourth Proportional to 171,087.80, 256,242.90 and 108,102.20

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Solution

The fourth proportional to 171,087.80, 256,242.90 and 108,102.20 is: 161,907.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,087.80 : 256,242.90 = 108,102.20 : x
  2. Step 2: Convert to fraction form
    171,087.80/256,242.90 = 108,102.20/x
  3. Step 3: Cross multiply
    171,087.80x = 256,242.90 × 108,102.20
  4. Step 4: Simplify right side
    171,087.80x = 27,700,421,224.38
  5. Step 5: Solve for x
    x = 27,700,421,224.38/171,087.80
  6. Step 6: Final answer
    x = 161,907.64

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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.