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Finding the Fourth Proportional to 138,600.33, 191,185.88 and 87,522.95

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Solution

The fourth proportional to 138,600.33, 191,185.88 and 87,522.95 is: 120,729.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,600.33 : 191,185.88 = 87,522.95 : x
  2. Step 2: Convert to fraction form
    138,600.33/191,185.88 = 87,522.95/x
  3. Step 3: Cross multiply
    138,600.33x = 191,185.88 × 87,522.95
  4. Step 4: Simplify right side
    138,600.33x = 16,733,150,822.40
  5. Step 5: Solve for x
    x = 16,733,150,822.40/138,600.33
  6. Step 6: Final answer
    x = 120,729.52

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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.