Home / 135,426.23-186,826.16-87,694.95

Finding the Fourth Proportional to 135,426.23, 186,826.16 and 87,694.95

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Solution

The fourth proportional to 135,426.23, 186,826.16 and 87,694.95 is: 120,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,426.23 : 186,826.16 = 87,694.95 : x
  2. Step 2: Convert to fraction form
    135,426.23/186,826.16 = 87,694.95/x
  3. Step 3: Cross multiply
    135,426.23x = 186,826.16 × 87,694.95
  4. Step 4: Simplify right side
    135,426.23x = 16,383,711,679.73
  5. Step 5: Solve for x
    x = 16,383,711,679.73/135,426.23
  6. Step 6: Final answer
    x = 120,978.87

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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.