Home / 138,961.05-191,766.91-75,298.97

Finding the Fourth Proportional to 138,961.05, 191,766.91 and 75,298.97

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Solution

The fourth proportional to 138,961.05, 191,766.91 and 75,298.97 is: 103,912.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,961.05 : 191,766.91 = 75,298.97 : x
  2. Step 2: Convert to fraction form
    138,961.05/191,766.91 = 75,298.97/x
  3. Step 3: Cross multiply
    138,961.05x = 191,766.91 × 75,298.97
  4. Step 4: Simplify right side
    138,961.05x = 14,439,849,844.25
  5. Step 5: Solve for x
    x = 14,439,849,844.25/138,961.05
  6. Step 6: Final answer
    x = 103,912.93

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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.