Home / 135,203.65-186,604.45-81,488.73

Finding the Fourth Proportional to 135,203.65, 186,604.45 and 81,488.73

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Solution

The fourth proportional to 135,203.65, 186,604.45 and 81,488.73 is: 112,468.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,203.65 : 186,604.45 = 81,488.73 : x
  2. Step 2: Convert to fraction form
    135,203.65/186,604.45 = 81,488.73/x
  3. Step 3: Cross multiply
    135,203.65x = 186,604.45 × 81,488.73
  4. Step 4: Simplify right side
    135,203.65x = 15,206,159,846.57
  5. Step 5: Solve for x
    x = 15,206,159,846.57/135,203.65
  6. Step 6: Final answer
    x = 112,468.56

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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.