Home / 420,110.91-630,163.13-104,565.69

Finding the Fourth Proportional to 420,110.91, 630,163.13 and 104,565.69

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Solution

The fourth proportional to 420,110.91, 630,163.13 and 104,565.69 is: 156,847.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,110.91 : 630,163.13 = 104,565.69 : x
  2. Step 2: Convert to fraction form
    420,110.91/630,163.13 = 104,565.69/x
  3. Step 3: Cross multiply
    420,110.91x = 630,163.13 × 104,565.69
  4. Step 4: Simplify right side
    420,110.91x = 65,893,441,978.18
  5. Step 5: Solve for x
    x = 65,893,441,978.18/420,110.91
  6. Step 6: Final answer
    x = 156,847.73

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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.