Home / 135,014.14-186,257.46-78,414.58

Finding the Fourth Proportional to 135,014.14, 186,257.46 and 78,414.58

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Solution

The fourth proportional to 135,014.14, 186,257.46 and 78,414.58 is: 108,176.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,014.14 : 186,257.46 = 78,414.58 : x
  2. Step 2: Convert to fraction form
    135,014.14/186,257.46 = 78,414.58/x
  3. Step 3: Cross multiply
    135,014.14x = 186,257.46 × 78,414.58
  4. Step 4: Simplify right side
    135,014.14x = 14,605,300,497.77
  5. Step 5: Solve for x
    x = 14,605,300,497.77/135,014.14
  6. Step 6: Final answer
    x = 108,176.08

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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.