Home / 103,542.29-155,305.07-28,663.80

Finding the Fourth Proportional to 103,542.29, 155,305.07 and 28,663.80

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Solution

The fourth proportional to 103,542.29, 155,305.07 and 28,663.80 is: 42,993.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,542.29 : 155,305.07 = 28,663.80 : x
  2. Step 2: Convert to fraction form
    103,542.29/155,305.07 = 28,663.80/x
  3. Step 3: Cross multiply
    103,542.29x = 155,305.07 × 28,663.80
  4. Step 4: Simplify right side
    103,542.29x = 4,451,633,322.15
  5. Step 5: Solve for x
    x = 4,451,633,322.15/103,542.29
  6. Step 6: Final answer
    x = 42,993.38

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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.