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Finding the Fourth Proportional to 171,079.80, 256,133.70 and 161,770.20

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Solution

The fourth proportional to 171,079.80, 256,133.70 and 161,770.20 is: 242,195.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,079.80 : 256,133.70 = 161,770.20 : x
  2. Step 2: Convert to fraction form
    171,079.80/256,133.70 = 161,770.20/x
  3. Step 3: Cross multiply
    171,079.80x = 256,133.70 × 161,770.20
  4. Step 4: Simplify right side
    171,079.80x = 41,434,799,875.74
  5. Step 5: Solve for x
    x = 41,434,799,875.74/171,079.80
  6. Step 6: Final answer
    x = 242,195.75

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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.