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Finding the Fourth Proportional to 128,073.08, 192,134.52 and 49,181.52

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Solution

The fourth proportional to 128,073.08, 192,134.52 and 49,181.52 is: 73,781.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,073.08 : 192,134.52 = 49,181.52 : x
  2. Step 2: Convert to fraction form
    128,073.08/192,134.52 = 49,181.52/x
  3. Step 3: Cross multiply
    128,073.08x = 192,134.52 × 49,181.52
  4. Step 4: Simplify right side
    128,073.08x = 9,449,467,738.07
  5. Step 5: Solve for x
    x = 9,449,467,738.07/128,073.08
  6. Step 6: Final answer
    x = 73,781.84

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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.