Home / 135,382.73-186,877.23-78,794.12

Finding the Fourth Proportional to 135,382.73, 186,877.23 and 78,794.12

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Solution

The fourth proportional to 135,382.73, 186,877.23 and 78,794.12 is: 108,764.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,382.73 : 186,877.23 = 78,794.12 : x
  2. Step 2: Convert to fraction form
    135,382.73/186,877.23 = 78,794.12/x
  3. Step 3: Cross multiply
    135,382.73x = 186,877.23 × 78,794.12
  4. Step 4: Simplify right side
    135,382.73x = 14,724,826,885.89
  5. Step 5: Solve for x
    x = 14,724,826,885.89/135,382.73
  6. Step 6: Final answer
    x = 108,764.44

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1.5x scale

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.