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Finding the Fourth Proportional to 103,135.28, 154,711.01 and 43,971.39

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Solution

The fourth proportional to 103,135.28, 154,711.01 and 43,971.39 is: 65,960.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,135.28 : 154,711.01 = 43,971.39 : x
  2. Step 2: Convert to fraction form
    103,135.28/154,711.01 = 43,971.39/x
  3. Step 3: Cross multiply
    103,135.28x = 154,711.01 × 43,971.39
  4. Step 4: Simplify right side
    103,135.28x = 6,802,858,267.93
  5. Step 5: Solve for x
    x = 6,802,858,267.93/103,135.28
  6. Step 6: Final answer
    x = 65,960.54

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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.