Home / 135,204.15-186,605.14-81,489.23

Finding the Fourth Proportional to 135,204.15, 186,605.14 and 81,489.23

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Solution

The fourth proportional to 135,204.15, 186,605.14 and 81,489.23 is: 112,469.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,204.15 : 186,605.14 = 81,489.23 : x
  2. Step 2: Convert to fraction form
    135,204.15/186,605.14 = 81,489.23/x
  3. Step 3: Cross multiply
    135,204.15x = 186,605.14 × 81,489.23
  4. Step 4: Simplify right side
    135,204.15x = 15,206,309,376.37
  5. Step 5: Solve for x
    x = 15,206,309,376.37/135,204.15
  6. Step 6: Final answer
    x = 112,469.25

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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.