Home / 103,612.96-155,592.78-90,578.44

Finding the Fourth Proportional to 103,612.96, 155,592.78 and 90,578.44

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Solution

The fourth proportional to 103,612.96, 155,592.78 and 90,578.44 is: 136,019.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,612.96 : 155,592.78 = 90,578.44 : x
  2. Step 2: Convert to fraction form
    103,612.96/155,592.78 = 90,578.44/x
  3. Step 3: Cross multiply
    103,612.96x = 155,592.78 × 90,578.44
  4. Step 4: Simplify right side
    103,612.96x = 14,093,351,287.66
  5. Step 5: Solve for x
    x = 14,093,351,287.66/103,612.96
  6. Step 6: Final answer
    x = 136,019.19

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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.