Home / 90,201.84-135,178.08-78,327.42

Finding the Fourth Proportional to 90,201.84, 135,178.08 and 78,327.42

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Solution

The fourth proportional to 90,201.84, 135,178.08 and 78,327.42 is: 117,382.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,201.84 : 135,178.08 = 78,327.42 : x
  2. Step 2: Convert to fraction form
    90,201.84/135,178.08 = 78,327.42/x
  3. Step 3: Cross multiply
    90,201.84x = 135,178.08 × 78,327.42
  4. Step 4: Simplify right side
    90,201.84x = 10,588,150,246.95
  5. Step 5: Solve for x
    x = 10,588,150,246.95/90,201.84
  6. Step 6: Final answer
    x = 117,382.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.