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Finding the Fourth Proportional to 123,661.50, 170,652.90 and 69,945.36

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Solution

The fourth proportional to 123,661.50, 170,652.90 and 69,945.36 is: 96,524.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,661.50 : 170,652.90 = 69,945.36 : x
  2. Step 2: Convert to fraction form
    123,661.50/170,652.90 = 69,945.36/x
  3. Step 3: Cross multiply
    123,661.50x = 170,652.90 × 69,945.36
  4. Step 4: Simplify right side
    123,661.50x = 11,936,378,525.54
  5. Step 5: Solve for x
    x = 11,936,378,525.54/123,661.50
  6. Step 6: Final answer
    x = 96,524.61

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1.5x scale

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.