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Finding the Fourth Proportional to 171,158.56, 256,798.64 and 76,380.12

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Solution

The fourth proportional to 171,158.56, 256,798.64 and 76,380.12 is: 114,597.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,158.56 : 256,798.64 = 76,380.12 : x
  2. Step 2: Convert to fraction form
    171,158.56/256,798.64 = 76,380.12/x
  3. Step 3: Cross multiply
    171,158.56x = 256,798.64 × 76,380.12
  4. Step 4: Simplify right side
    171,158.56x = 19,614,310,939.04
  5. Step 5: Solve for x
    x = 19,614,310,939.04/171,158.56
  6. Step 6: Final answer
    x = 114,597.31

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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.