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Finding the Fourth Proportional to 171,001.80, 256,502.70 and 71,128.80

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Solution

The fourth proportional to 171,001.80, 256,502.70 and 71,128.80 is: 106,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,001.80 : 256,502.70 = 71,128.80 : x
  2. Step 2: Convert to fraction form
    171,001.80/256,502.70 = 71,128.80/x
  3. Step 3: Cross multiply
    171,001.80x = 256,502.70 × 71,128.80
  4. Step 4: Simplify right side
    171,001.80x = 18,244,729,247.76
  5. Step 5: Solve for x
    x = 18,244,729,247.76/171,001.80
  6. Step 6: Final answer
    x = 106,693.20

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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.