Home / 105,964.80-146,380.68-100,366.08

Finding the Fourth Proportional to 105,964.80, 146,380.68 and 100,366.08

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Solution

The fourth proportional to 105,964.80, 146,380.68 and 100,366.08 is: 138,646.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,964.80 : 146,380.68 = 100,366.08 : x
  2. Step 2: Convert to fraction form
    105,964.80/146,380.68 = 100,366.08/x
  3. Step 3: Cross multiply
    105,964.80x = 146,380.68 × 100,366.08
  4. Step 4: Simplify right side
    105,964.80x = 14,691,655,039.33
  5. Step 5: Solve for x
    x = 14,691,655,039.33/105,964.80
  6. Step 6: Final answer
    x = 138,646.56

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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.