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Finding the Fourth Proportional to 192,128.28, 265,135.99 and 111,575.59

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Solution

The fourth proportional to 192,128.28, 265,135.99 and 111,575.59 is: 153,973.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,128.28 : 265,135.99 = 111,575.59 : x
  2. Step 2: Convert to fraction form
    192,128.28/265,135.99 = 111,575.59/x
  3. Step 3: Cross multiply
    192,128.28x = 265,135.99 × 111,575.59
  4. Step 4: Simplify right side
    192,128.28x = 29,582,704,514.48
  5. Step 5: Solve for x
    x = 29,582,704,514.48/192,128.28
  6. Step 6: Final answer
    x = 153,973.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.