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Finding the Fourth Proportional to 123,652.43, 170,640.36 and 69,936.30

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Solution

The fourth proportional to 123,652.43, 170,640.36 and 69,936.30 is: 96,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,652.43 : 170,640.36 = 69,936.30 : x
  2. Step 2: Convert to fraction form
    123,652.43/170,640.36 = 69,936.30/x
  3. Step 3: Cross multiply
    123,652.43x = 170,640.36 × 69,936.30
  4. Step 4: Simplify right side
    123,652.43x = 11,933,955,409.07
  5. Step 5: Solve for x
    x = 11,933,955,409.07/123,652.43
  6. Step 6: Final answer
    x = 96,512.10

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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.