Home / 92,305.07-138,729.61-76,610.61

Finding the Fourth Proportional to 92,305.07, 138,729.61 and 76,610.61

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Solution

The fourth proportional to 92,305.07, 138,729.61 and 76,610.61 is: 115,141.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,305.07 : 138,729.61 = 76,610.61 : x
  2. Step 2: Convert to fraction form
    92,305.07/138,729.61 = 76,610.61/x
  3. Step 3: Cross multiply
    92,305.07x = 138,729.61 × 76,610.61
  4. Step 4: Simplify right side
    92,305.07x = 10,628,160,142.93
  5. Step 5: Solve for x
    x = 10,628,160,142.93/92,305.07
  6. Step 6: Final answer
    x = 115,141.67

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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.