Home / 99,958.12-137,942.10-55,246.12

Finding the Fourth Proportional to 99,958.12, 137,942.10 and 55,246.12

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Solution

The fourth proportional to 99,958.12, 137,942.10 and 55,246.12 is: 76,239.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,958.12 : 137,942.10 = 55,246.12 : x
  2. Step 2: Convert to fraction form
    99,958.12/137,942.10 = 55,246.12/x
  3. Step 3: Cross multiply
    99,958.12x = 137,942.10 × 55,246.12
  4. Step 4: Simplify right side
    99,958.12x = 7,620,765,809.65
  5. Step 5: Solve for x
    x = 7,620,765,809.65/99,958.12
  6. Step 6: Final answer
    x = 76,239.59

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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.