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Finding the Fourth Proportional to 115,230.56, 159,019.44 and 64,928.48

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Solution

The fourth proportional to 115,230.56, 159,019.44 and 64,928.48 is: 89,602.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,230.56 : 159,019.44 = 64,928.48 : x
  2. Step 2: Convert to fraction form
    115,230.56/159,019.44 = 64,928.48/x
  3. Step 3: Cross multiply
    115,230.56x = 159,019.44 × 64,928.48
  4. Step 4: Simplify right side
    115,230.56x = 10,324,890,529.65
  5. Step 5: Solve for x
    x = 10,324,890,529.65/115,230.56
  6. Step 6: Final answer
    x = 89,602.02

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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.