Home / 203,565.24-305,124.30-85,311.72

Finding the Fourth Proportional to 203,565.24, 305,124.30 and 85,311.72

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Solution

The fourth proportional to 203,565.24, 305,124.30 and 85,311.72 is: 127,873.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,565.24 : 305,124.30 = 85,311.72 : x
  2. Step 2: Convert to fraction form
    203,565.24/305,124.30 = 85,311.72/x
  3. Step 3: Cross multiply
    203,565.24x = 305,124.30 × 85,311.72
  4. Step 4: Simplify right side
    203,565.24x = 26,030,678,846.80
  5. Step 5: Solve for x
    x = 26,030,678,846.80/203,565.24
  6. Step 6: Final answer
    x = 127,873.89

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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.