Home / 91,120.67-136,556.28-57,863.92

Finding the Fourth Proportional to 91,120.67, 136,556.28 and 57,863.92

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Solution

The fourth proportional to 91,120.67, 136,556.28 and 57,863.92 is: 86,716.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,120.67 : 136,556.28 = 57,863.92 : x
  2. Step 2: Convert to fraction form
    91,120.67/136,556.28 = 57,863.92/x
  3. Step 3: Cross multiply
    91,120.67x = 136,556.28 × 57,863.92
  4. Step 4: Simplify right side
    91,120.67x = 7,901,681,576.07
  5. Step 5: Solve for x
    x = 7,901,681,576.07/91,120.67
  6. Step 6: Final answer
    x = 86,716.67

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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.