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Finding the Fourth Proportional to 106,380.80, 146,808.78 and 61,067.06

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Solution

The fourth proportional to 106,380.80, 146,808.78 and 61,067.06 is: 84,274.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,380.80 : 146,808.78 = 61,067.06 : x
  2. Step 2: Convert to fraction form
    106,380.80/146,808.78 = 61,067.06/x
  3. Step 3: Cross multiply
    106,380.80x = 146,808.78 × 61,067.06
  4. Step 4: Simplify right side
    106,380.80x = 8,965,180,576.79
  5. Step 5: Solve for x
    x = 8,965,180,576.79/106,380.80
  6. Step 6: Final answer
    x = 84,274.42

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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.