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Finding the Fourth Proportional to 115,661.08, 159,599.46 and 65,360.08

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Solution

The fourth proportional to 115,661.08, 159,599.46 and 65,360.08 is: 90,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,661.08 : 159,599.46 = 65,360.08 : x
  2. Step 2: Convert to fraction form
    115,661.08/159,599.46 = 65,360.08/x
  3. Step 3: Cross multiply
    115,661.08x = 159,599.46 × 65,360.08
  4. Step 4: Simplify right side
    115,661.08x = 10,431,433,473.56
  5. Step 5: Solve for x
    x = 10,431,433,473.56/115,661.08
  6. Step 6: Final answer
    x = 90,189.66

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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.