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Finding the Fourth Proportional to 115,955.56, 159,960.18 and 68,178.52

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Solution

The fourth proportional to 115,955.56, 159,960.18 and 68,178.52 is: 94,051.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,955.56 : 159,960.18 = 68,178.52 : x
  2. Step 2: Convert to fraction form
    115,955.56/159,960.18 = 68,178.52/x
  3. Step 3: Cross multiply
    115,955.56x = 159,960.18 × 68,178.52
  4. Step 4: Simplify right side
    115,955.56x = 10,905,848,331.33
  5. Step 5: Solve for x
    x = 10,905,848,331.33/115,955.56
  6. Step 6: Final answer
    x = 94,051.97

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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.