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Finding the Fourth Proportional to 126,674.94, 190,012.89 and 102,869.91

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Solution

The fourth proportional to 126,674.94, 190,012.89 and 102,869.91 is: 154,305.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,674.94 : 190,012.89 = 102,869.91 : x
  2. Step 2: Convert to fraction form
    126,674.94/190,012.89 = 102,869.91/x
  3. Step 3: Cross multiply
    126,674.94x = 190,012.89 × 102,869.91
  4. Step 4: Simplify right side
    126,674.94x = 19,546,608,893.14
  5. Step 5: Solve for x
    x = 19,546,608,893.14/126,674.94
  6. Step 6: Final answer
    x = 154,305.25

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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.