Home / 76,139.43-113,960.75-68,864.55

Finding the Fourth Proportional to 76,139.43, 113,960.75 and 68,864.55

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Solution

The fourth proportional to 76,139.43, 113,960.75 and 68,864.55 is: 103,072.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,139.43 : 113,960.75 = 68,864.55 : x
  2. Step 2: Convert to fraction form
    76,139.43/113,960.75 = 68,864.55/x
  3. Step 3: Cross multiply
    76,139.43x = 113,960.75 × 68,864.55
  4. Step 4: Simplify right side
    76,139.43x = 7,847,855,422.09
  5. Step 5: Solve for x
    x = 7,847,855,422.09/76,139.43
  6. Step 6: Final answer
    x = 103,072.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.