Home / 128,650.14-192,965.96-39,901.34

Finding the Fourth Proportional to 128,650.14, 192,965.96 and 39,901.34

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Solution

The fourth proportional to 128,650.14, 192,965.96 and 39,901.34 is: 59,849.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,650.14 : 192,965.96 = 39,901.34 : x
  2. Step 2: Convert to fraction form
    128,650.14/192,965.96 = 39,901.34/x
  3. Step 3: Cross multiply
    128,650.14x = 192,965.96 × 39,901.34
  4. Step 4: Simplify right side
    128,650.14x = 7,699,600,960.55
  5. Step 5: Solve for x
    x = 7,699,600,960.55/128,650.14
  6. Step 6: Final answer
    x = 59,849.15

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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.