Home / 103,811.85-155,717.89-28,932.21

Finding the Fourth Proportional to 103,811.85, 155,717.89 and 28,932.21

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Solution

The fourth proportional to 103,811.85, 155,717.89 and 28,932.21 is: 43,398.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,811.85 : 155,717.89 = 28,932.21 : x
  2. Step 2: Convert to fraction form
    103,811.85/155,717.89 = 28,932.21/x
  3. Step 3: Cross multiply
    103,811.85x = 155,717.89 × 28,932.21
  4. Step 4: Simplify right side
    103,811.85x = 4,505,262,621.91
  5. Step 5: Solve for x
    x = 4,505,262,621.91/103,811.85
  6. Step 6: Final answer
    x = 43,398.35

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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.