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Finding the Fourth Proportional to 115,190.72, 158,958.08 and 64,209.02

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Solution

The fourth proportional to 115,190.72, 158,958.08 and 64,209.02 is: 88,605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,190.72 : 158,958.08 = 64,209.02 : x
  2. Step 2: Convert to fraction form
    115,190.72/158,958.08 = 64,209.02/x
  3. Step 3: Cross multiply
    115,190.72x = 158,958.08 × 64,209.02
  4. Step 4: Simplify right side
    115,190.72x = 10,206,541,662.83
  5. Step 5: Solve for x
    x = 10,206,541,662.83/115,190.72
  6. Step 6: Final answer
    x = 88,605.59

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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.