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Finding the Fourth Proportional to 167,382.30, 230,986.82 and 90,900.80

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Solution

The fourth proportional to 167,382.30, 230,986.82 and 90,900.80 is: 125,442.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,382.30 : 230,986.82 = 90,900.80 : x
  2. Step 2: Convert to fraction form
    167,382.30/230,986.82 = 90,900.80/x
  3. Step 3: Cross multiply
    167,382.30x = 230,986.82 × 90,900.80
  4. Step 4: Simplify right side
    167,382.30x = 20,996,885,118.02
  5. Step 5: Solve for x
    x = 20,996,885,118.02/167,382.30
  6. Step 6: Final answer
    x = 125,442.68

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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.