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Finding the Fourth Proportional to 166,959.76, 230,403.92 and 90,479.12

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Solution

The fourth proportional to 166,959.76, 230,403.92 and 90,479.12 is: 124,860.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,959.76 : 230,403.92 = 90,479.12 : x
  2. Step 2: Convert to fraction form
    166,959.76/230,403.92 = 90,479.12/x
  3. Step 3: Cross multiply
    166,959.76x = 230,403.92 × 90,479.12
  4. Step 4: Simplify right side
    166,959.76x = 20,846,743,926.15
  5. Step 5: Solve for x
    x = 20,846,743,926.15/166,959.76
  6. Step 6: Final answer
    x = 124,860.89

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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.