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Finding the Fourth Proportional to 171,190.17, 256,646.13 and 71,424.70

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Solution

The fourth proportional to 171,190.17, 256,646.13 and 71,424.70 is: 107,079.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,190.17 : 256,646.13 = 71,424.70 : x
  2. Step 2: Convert to fraction form
    171,190.17/256,646.13 = 71,424.70/x
  3. Step 3: Cross multiply
    171,190.17x = 256,646.13 × 71,424.70
  4. Step 4: Simplify right side
    171,190.17x = 18,330,872,841.41
  5. Step 5: Solve for x
    x = 18,330,872,841.41/171,190.17
  6. Step 6: Final answer
    x = 107,079.00

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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.