Home / 138,540.24-191,185.56-74,877.84

Finding the Fourth Proportional to 138,540.24, 191,185.56 and 74,877.84

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Solution

The fourth proportional to 138,540.24, 191,185.56 and 74,877.84 is: 103,331.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,540.24 : 191,185.56 = 74,877.84 : x
  2. Step 2: Convert to fraction form
    138,540.24/191,185.56 = 74,877.84/x
  3. Step 3: Cross multiply
    138,540.24x = 191,185.56 × 74,877.84
  4. Step 4: Simplify right side
    138,540.24x = 14,315,561,771.99
  5. Step 5: Solve for x
    x = 14,315,561,771.99/138,540.24
  6. Step 6: Final answer
    x = 103,331.43

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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.