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Finding the Fourth Proportional to 100,044.93, 138,059.07 and 54,721.93

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Solution

The fourth proportional to 100,044.93, 138,059.07 and 54,721.93 is: 75,514.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,044.93 : 138,059.07 = 54,721.93 : x
  2. Step 2: Convert to fraction form
    100,044.93/138,059.07 = 54,721.93/x
  3. Step 3: Cross multiply
    100,044.93x = 138,059.07 × 54,721.93
  4. Step 4: Simplify right side
    100,044.93x = 7,554,858,938.15
  5. Step 5: Solve for x
    x = 7,554,858,938.15/100,044.93
  6. Step 6: Final answer
    x = 75,514.66

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1.5x scale

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.