Home / 138,436.74-191,042.82-74,774.52

Finding the Fourth Proportional to 138,436.74, 191,042.82 and 74,774.52

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Solution

The fourth proportional to 138,436.74, 191,042.82 and 74,774.52 is: 103,188.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,436.74 : 191,042.82 = 74,774.52 : x
  2. Step 2: Convert to fraction form
    138,436.74/191,042.82 = 74,774.52/x
  3. Step 3: Cross multiply
    138,436.74x = 191,042.82 × 74,774.52
  4. Step 4: Simplify right side
    138,436.74x = 14,285,135,164.95
  5. Step 5: Solve for x
    x = 14,285,135,164.95/138,436.74
  6. Step 6: Final answer
    x = 103,188.90

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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.