Home / 135,414.54-186,871.77-78,053.47

Finding the Fourth Proportional to 135,414.54, 186,871.77 and 78,053.47

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Solution

The fourth proportional to 135,414.54, 186,871.77 and 78,053.47 is: 107,713.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,414.54 : 186,871.77 = 78,053.47 : x
  2. Step 2: Convert to fraction form
    135,414.54/186,871.77 = 78,053.47/x
  3. Step 3: Cross multiply
    135,414.54x = 186,871.77 × 78,053.47
  4. Step 4: Simplify right side
    135,414.54x = 14,585,990,093.54
  5. Step 5: Solve for x
    x = 14,585,990,093.54/135,414.54
  6. Step 6: Final answer
    x = 107,713.62

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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.