Home / 120,678.54-166,544.20-66,963.69

Finding the Fourth Proportional to 120,678.54, 166,544.20 and 66,963.69

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Solution

The fourth proportional to 120,678.54, 166,544.20 and 66,963.69 is: 92,414.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,678.54 : 166,544.20 = 66,963.69 : x
  2. Step 2: Convert to fraction form
    120,678.54/166,544.20 = 66,963.69/x
  3. Step 3: Cross multiply
    120,678.54x = 166,544.20 × 66,963.69
  4. Step 4: Simplify right side
    120,678.54x = 11,152,414,263.80
  5. Step 5: Solve for x
    x = 11,152,414,263.80/120,678.54
  6. Step 6: Final answer
    x = 92,414.23

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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.