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Finding the Fourth Proportional to 123,305.51, 170,144.53 and 68,851.03

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Solution

The fourth proportional to 123,305.51, 170,144.53 and 68,851.03 is: 95,004.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,305.51 : 170,144.53 = 68,851.03 : x
  2. Step 2: Convert to fraction form
    123,305.51/170,144.53 = 68,851.03/x
  3. Step 3: Cross multiply
    123,305.51x = 170,144.53 × 68,851.03
  4. Step 4: Simplify right side
    123,305.51x = 11,714,626,139.37
  5. Step 5: Solve for x
    x = 11,714,626,139.37/123,305.51
  6. Step 6: Final answer
    x = 95,004.89

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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.