Home / 103,864.35-155,797.69-28,979.96

Finding the Fourth Proportional to 103,864.35, 155,797.69 and 28,979.96

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Solution

The fourth proportional to 103,864.35, 155,797.69 and 28,979.96 is: 43,470.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,864.35 : 155,797.69 = 28,979.96 : x
  2. Step 2: Convert to fraction form
    103,864.35/155,797.69 = 28,979.96/x
  3. Step 3: Cross multiply
    103,864.35x = 155,797.69 × 28,979.96
  4. Step 4: Simplify right side
    103,864.35x = 4,515,009,972.85
  5. Step 5: Solve for x
    x = 4,515,009,972.85/103,864.35
  6. Step 6: Final answer
    x = 43,470.26

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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.