Home / 139,318.90-192,290.70-91,576.69

Finding the Fourth Proportional to 139,318.90, 192,290.70 and 91,576.69

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Solution

The fourth proportional to 139,318.90, 192,290.70 and 91,576.69 is: 126,395.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,318.90 : 192,290.70 = 91,576.69 : x
  2. Step 2: Convert to fraction form
    139,318.90/192,290.70 = 91,576.69/x
  3. Step 3: Cross multiply
    139,318.90x = 192,290.70 × 91,576.69
  4. Step 4: Simplify right side
    139,318.90x = 17,609,345,823.78
  5. Step 5: Solve for x
    x = 17,609,345,823.78/139,318.90
  6. Step 6: Final answer
    x = 126,395.96

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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.