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Finding the Fourth Proportional to 128,894.76, 193,370.22 and 52,993.85

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Solution

The fourth proportional to 128,894.76, 193,370.22 and 52,993.85 is: 79,502.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,894.76 : 193,370.22 = 52,993.85 : x
  2. Step 2: Convert to fraction form
    128,894.76/193,370.22 = 52,993.85/x
  3. Step 3: Cross multiply
    128,894.76x = 193,370.22 × 52,993.85
  4. Step 4: Simplify right side
    128,894.76x = 10,247,431,466.30
  5. Step 5: Solve for x
    x = 10,247,431,466.30/128,894.76
  6. Step 6: Final answer
    x = 79,502.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.