Home / 103,388.22-155,056.68-28,505.07

Finding the Fourth Proportional to 103,388.22, 155,056.68 and 28,505.07

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Solution

The fourth proportional to 103,388.22, 155,056.68 and 28,505.07 is: 42,750.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,388.22 : 155,056.68 = 28,505.07 : x
  2. Step 2: Convert to fraction form
    103,388.22/155,056.68 = 28,505.07/x
  3. Step 3: Cross multiply
    103,388.22x = 155,056.68 × 28,505.07
  4. Step 4: Simplify right side
    103,388.22x = 4,419,901,517.37
  5. Step 5: Solve for x
    x = 4,419,901,517.37/103,388.22
  6. Step 6: Final answer
    x = 42,750.53

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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.