Home / 128,221.24-192,353.82-39,473

Finding the Fourth Proportional to 128,221.24, 192,353.82 and 39,473

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Solution

The fourth proportional to 128,221.24, 192,353.82 and 39,473 is: 59,216.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,221.24 : 192,353.82 = 39,473 : x
  2. Step 2: Convert to fraction form
    128,221.24/192,353.82 = 39,473/x
  3. Step 3: Cross multiply
    128,221.24x = 192,353.82 × 39,473
  4. Step 4: Simplify right side
    128,221.24x = 7,592,782,336.86
  5. Step 5: Solve for x
    x = 7,592,782,336.86/128,221.24
  6. Step 6: Final answer
    x = 59,216.26

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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.