Home / 122,629.80-169,290.36-80,253.06

Finding the Fourth Proportional to 122,629.80, 169,290.36 and 80,253.06

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Solution

The fourth proportional to 122,629.80, 169,290.36 and 80,253.06 is: 110,789.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,629.80 : 169,290.36 = 80,253.06 : x
  2. Step 2: Convert to fraction form
    122,629.80/169,290.36 = 80,253.06/x
  3. Step 3: Cross multiply
    122,629.80x = 169,290.36 × 80,253.06
  4. Step 4: Simplify right side
    122,629.80x = 13,586,069,418.50
  5. Step 5: Solve for x
    x = 13,586,069,418.50/122,629.80
  6. Step 6: Final answer
    x = 110,789.30

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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.