Home / 91,086.03-135,723.57-81,148.95

Finding the Fourth Proportional to 91,086.03, 135,723.57 and 81,148.95

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Solution

The fourth proportional to 91,086.03, 135,723.57 and 81,148.95 is: 120,916.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,086.03 : 135,723.57 = 81,148.95 : x
  2. Step 2: Convert to fraction form
    91,086.03/135,723.57 = 81,148.95/x
  3. Step 3: Cross multiply
    91,086.03x = 135,723.57 × 81,148.95
  4. Step 4: Simplify right side
    91,086.03x = 11,013,825,195.75
  5. Step 5: Solve for x
    x = 11,013,825,195.75/91,086.03
  6. Step 6: Final answer
    x = 120,916.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.