Home / 136,899.54-188,869.41-89,193.78

Finding the Fourth Proportional to 136,899.54, 188,869.41 and 89,193.78

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Solution

The fourth proportional to 136,899.54, 188,869.41 and 89,193.78 is: 123,053.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,899.54 : 188,869.41 = 89,193.78 : x
  2. Step 2: Convert to fraction form
    136,899.54/188,869.41 = 89,193.78/x
  3. Step 3: Cross multiply
    136,899.54x = 188,869.41 × 89,193.78
  4. Step 4: Simplify right side
    136,899.54x = 16,845,976,604.27
  5. Step 5: Solve for x
    x = 16,845,976,604.27/136,899.54
  6. Step 6: Final answer
    x = 123,053.57

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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.