Home / 131,928.74-182,029.95-78,226.95

Finding the Fourth Proportional to 131,928.74, 182,029.95 and 78,226.95

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Solution

The fourth proportional to 131,928.74, 182,029.95 and 78,226.95 is: 107,934.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,928.74 : 182,029.95 = 78,226.95 : x
  2. Step 2: Convert to fraction form
    131,928.74/182,029.95 = 78,226.95/x
  3. Step 3: Cross multiply
    131,928.74x = 182,029.95 × 78,226.95
  4. Step 4: Simplify right side
    131,928.74x = 14,239,647,797.15
  5. Step 5: Solve for x
    x = 14,239,647,797.15/131,928.74
  6. Step 6: Final answer
    x = 107,934.39

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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.