Home / 103,657.12-155,488.92-28,778.02

Finding the Fourth Proportional to 103,657.12, 155,488.92 and 28,778.02

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Solution

The fourth proportional to 103,657.12, 155,488.92 and 28,778.02 is: 43,167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,657.12 : 155,488.92 = 28,778.02 : x
  2. Step 2: Convert to fraction form
    103,657.12/155,488.92 = 28,778.02/x
  3. Step 3: Cross multiply
    103,657.12x = 155,488.92 × 28,778.02
  4. Step 4: Simplify right side
    103,657.12x = 4,474,663,249.54
  5. Step 5: Solve for x
    x = 4,474,663,249.54/103,657.12
  6. Step 6: Final answer
    x = 43,167.93

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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.