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Finding the Fourth Proportional to 169,788.64, 254,682.66 and 45,129.64

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Solution

The fourth proportional to 169,788.64, 254,682.66 and 45,129.64 is: 67,694.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,788.64 : 254,682.66 = 45,129.64 : x
  2. Step 2: Convert to fraction form
    169,788.64/254,682.66 = 45,129.64/x
  3. Step 3: Cross multiply
    169,788.64x = 254,682.66 × 45,129.64
  4. Step 4: Simplify right side
    169,788.64x = 11,493,736,760.04
  5. Step 5: Solve for x
    x = 11,493,736,760.04/169,788.64
  6. Step 6: Final answer
    x = 67,694.38

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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.