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Finding the Fourth Proportional to 115,195.26, 158,955.30 and 64,195.50

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Solution

The fourth proportional to 115,195.26, 158,955.30 and 64,195.50 is: 88,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,195.26 : 158,955.30 = 64,195.50 : x
  2. Step 2: Convert to fraction form
    115,195.26/158,955.30 = 64,195.50/x
  3. Step 3: Cross multiply
    115,195.26x = 158,955.30 × 64,195.50
  4. Step 4: Simplify right side
    115,195.26x = 10,204,214,961.15
  5. Step 5: Solve for x
    x = 10,204,214,961.15/115,195.26
  6. Step 6: Final answer
    x = 88,581.90

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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.