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Finding the Fourth Proportional to 100,701.30, 150,879.15 and 65,622.90

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Solution

The fourth proportional to 100,701.30, 150,879.15 and 65,622.90 is: 98,321.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,701.30 : 150,879.15 = 65,622.90 : x
  2. Step 2: Convert to fraction form
    100,701.30/150,879.15 = 65,622.90/x
  3. Step 3: Cross multiply
    100,701.30x = 150,879.15 × 65,622.90
  4. Step 4: Simplify right side
    100,701.30x = 9,901,127,372.54
  5. Step 5: Solve for x
    x = 9,901,127,372.54/100,701.30
  6. Step 6: Final answer
    x = 98,321.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.