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Finding the Fourth Proportional to 166,971.78, 230,422.32 and 91,520.28

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Solution

The fourth proportional to 166,971.78, 230,422.32 and 91,520.28 is: 126,298.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,971.78 : 230,422.32 = 91,520.28 : x
  2. Step 2: Convert to fraction form
    166,971.78/230,422.32 = 91,520.28/x
  3. Step 3: Cross multiply
    166,971.78x = 230,422.32 × 91,520.28
  4. Step 4: Simplify right side
    166,971.78x = 21,088,315,244.65
  5. Step 5: Solve for x
    x = 21,088,315,244.65/166,971.78
  6. Step 6: Final answer
    x = 126,298.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.