Home / 135,729.82-187,306.92-75,309.66

Finding the Fourth Proportional to 135,729.82, 187,306.92 and 75,309.66

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Solution

The fourth proportional to 135,729.82, 187,306.92 and 75,309.66 is: 103,927.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,729.82 : 187,306.92 = 75,309.66 : x
  2. Step 2: Convert to fraction form
    135,729.82/187,306.92 = 75,309.66/x
  3. Step 3: Cross multiply
    135,729.82x = 187,306.92 × 75,309.66
  4. Step 4: Simplify right side
    135,729.82x = 14,106,020,460.85
  5. Step 5: Solve for x
    x = 14,106,020,460.85/135,729.82
  6. Step 6: Final answer
    x = 103,927.20

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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.