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Finding the Fourth Proportional to 115,175.60, 158,939.40 and 64,188.56

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Solution

The fourth proportional to 115,175.60, 158,939.40 and 64,188.56 is: 88,578.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,175.60 : 158,939.40 = 64,188.56 : x
  2. Step 2: Convert to fraction form
    115,175.60/158,939.40 = 64,188.56/x
  3. Step 3: Cross multiply
    115,175.60x = 158,939.40 × 64,188.56
  4. Step 4: Simplify right side
    115,175.60x = 10,202,091,213.26
  5. Step 5: Solve for x
    x = 10,202,091,213.26/115,175.60
  6. Step 6: Final answer
    x = 88,578.58

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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.