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Finding the Fourth Proportional to 136,620.95, 188,472.57 and 88,856.87

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Solution

The fourth proportional to 136,620.95, 188,472.57 and 88,856.87 is: 122,580.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,620.95 : 188,472.57 = 88,856.87 : x
  2. Step 2: Convert to fraction form
    136,620.95/188,472.57 = 88,856.87/x
  3. Step 3: Cross multiply
    136,620.95x = 188,472.57 × 88,856.87
  4. Step 4: Simplify right side
    136,620.95x = 16,747,083,122.24
  5. Step 5: Solve for x
    x = 16,747,083,122.24/136,620.95
  6. Step 6: Final answer
    x = 122,580.64

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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.