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Finding the Fourth Proportional to 103,654.13, 155,481.15 and 28,774.27

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Solution

The fourth proportional to 103,654.13, 155,481.15 and 28,774.27 is: 43,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,654.13 : 155,481.15 = 28,774.27 : x
  2. Step 2: Convert to fraction form
    103,654.13/155,481.15 = 28,774.27/x
  3. Step 3: Cross multiply
    103,654.13x = 155,481.15 × 28,774.27
  4. Step 4: Simplify right side
    103,654.13x = 4,473,856,590.01
  5. Step 5: Solve for x
    x = 4,473,856,590.01/103,654.13
  6. Step 6: Final answer
    x = 43,161.39

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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.