Home / 135,890.94-187,530.81-79,291.38

Finding the Fourth Proportional to 135,890.94, 187,530.81 and 79,291.38

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Solution

The fourth proportional to 135,890.94, 187,530.81 and 79,291.38 is: 109,422.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,890.94 : 187,530.81 = 79,291.38 : x
  2. Step 2: Convert to fraction form
    135,890.94/187,530.81 = 79,291.38/x
  3. Step 3: Cross multiply
    135,890.94x = 187,530.81 × 79,291.38
  4. Step 4: Simplify right side
    135,890.94x = 14,869,576,717.42
  5. Step 5: Solve for x
    x = 14,869,576,717.42/135,890.94
  6. Step 6: Final answer
    x = 109,422.87

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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.