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Finding the Fourth Proportional to 123,881.70, 171,027.68 and 81,563.26

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Solution

The fourth proportional to 123,881.70, 171,027.68 and 81,563.26 is: 112,604.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,881.70 : 171,027.68 = 81,563.26 : x
  2. Step 2: Convert to fraction form
    123,881.70/171,027.68 = 81,563.26/x
  3. Step 3: Cross multiply
    123,881.70x = 171,027.68 × 81,563.26
  4. Step 4: Simplify right side
    123,881.70x = 13,949,575,131.04
  5. Step 5: Solve for x
    x = 13,949,575,131.04/123,881.70
  6. Step 6: Final answer
    x = 112,604.00

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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.