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Finding the Fourth Proportional to 169,389.77, 253,863.21 and 126,936.15

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Solution

The fourth proportional to 169,389.77, 253,863.21 and 126,936.15 is: 190,238.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,389.77 : 253,863.21 = 126,936.15 : x
  2. Step 2: Convert to fraction form
    169,389.77/253,863.21 = 126,936.15/x
  3. Step 3: Cross multiply
    169,389.77x = 253,863.21 × 126,936.15
  4. Step 4: Simplify right side
    169,389.77x = 32,224,418,028.07
  5. Step 5: Solve for x
    x = 32,224,418,028.07/169,389.77
  6. Step 6: Final answer
    x = 190,238.28

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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.