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Finding the Fourth Proportional to 169,739.96, 254,222.40 and 81,055.94

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Solution

The fourth proportional to 169,739.96, 254,222.40 and 81,055.94 is: 121,398.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,739.96 : 254,222.40 = 81,055.94 : x
  2. Step 2: Convert to fraction form
    169,739.96/254,222.40 = 81,055.94/x
  3. Step 3: Cross multiply
    169,739.96x = 254,222.40 × 81,055.94
  4. Step 4: Simplify right side
    169,739.96x = 20,606,235,601.06
  5. Step 5: Solve for x
    x = 20,606,235,601.06/169,739.96
  6. Step 6: Final answer
    x = 121,398.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.