Home / 138,986.88-191,801.82-75,324.66

Finding the Fourth Proportional to 138,986.88, 191,801.82 and 75,324.66

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Solution

The fourth proportional to 138,986.88, 191,801.82 and 75,324.66 is: 103,947.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,986.88 : 191,801.82 = 75,324.66 : x
  2. Step 2: Convert to fraction form
    138,986.88/191,801.82 = 75,324.66/x
  3. Step 3: Cross multiply
    138,986.88x = 191,801.82 × 75,324.66
  4. Step 4: Simplify right side
    138,986.88x = 14,447,406,878.88
  5. Step 5: Solve for x
    x = 14,447,406,878.88/138,986.88
  6. Step 6: Final answer
    x = 103,947.99

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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.