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Finding the Fourth Proportional to 128,199.52, 192,317.52 and 39,460.42

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Solution

The fourth proportional to 128,199.52, 192,317.52 and 39,460.42 is: 59,196.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,199.52 : 192,317.52 = 39,460.42 : x
  2. Step 2: Convert to fraction form
    128,199.52/192,317.52 = 39,460.42/x
  3. Step 3: Cross multiply
    128,199.52x = 192,317.52 × 39,460.42
  4. Step 4: Simplify right side
    128,199.52x = 7,588,930,112.56
  5. Step 5: Solve for x
    x = 7,588,930,112.56/128,199.52
  6. Step 6: Final answer
    x = 59,196.24

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1.5x scale

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.