Home / 134,839.96-186,078.36-78,250.12

Finding the Fourth Proportional to 134,839.96, 186,078.36 and 78,250.12

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Solution

The fourth proportional to 134,839.96, 186,078.36 and 78,250.12 is: 107,984.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,839.96 : 186,078.36 = 78,250.12 : x
  2. Step 2: Convert to fraction form
    134,839.96/186,078.36 = 78,250.12/x
  3. Step 3: Cross multiply
    134,839.96x = 186,078.36 × 78,250.12
  4. Step 4: Simplify right side
    134,839.96x = 14,560,653,827.65
  5. Step 5: Solve for x
    x = 14,560,653,827.65/134,839.96
  6. Step 6: Final answer
    x = 107,984.71

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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.