Home / 276,986.12-415,471.88-87,438.83

Finding the Fourth Proportional to 276,986.12, 415,471.88 and 87,438.83

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Solution

The fourth proportional to 276,986.12, 415,471.88 and 87,438.83 is: 131,155.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,986.12 : 415,471.88 = 87,438.83 : x
  2. Step 2: Convert to fraction form
    276,986.12/415,471.88 = 87,438.83/x
  3. Step 3: Cross multiply
    276,986.12x = 415,471.88 × 87,438.83
  4. Step 4: Simplify right side
    276,986.12x = 36,328,373,226.34
  5. Step 5: Solve for x
    x = 36,328,373,226.34/276,986.12
  6. Step 6: Final answer
    x = 131,155.94

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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.