Home / 103,661.13-155,491.65-28,781.27

Finding the Fourth Proportional to 103,661.13, 155,491.65 and 28,781.27

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Solution

The fourth proportional to 103,661.13, 155,491.65 and 28,781.27 is: 43,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,661.13 : 155,491.65 = 28,781.27 : x
  2. Step 2: Convert to fraction form
    103,661.13/155,491.65 = 28,781.27/x
  3. Step 3: Cross multiply
    103,661.13x = 155,491.65 × 28,781.27
  4. Step 4: Simplify right side
    103,661.13x = 4,475,247,161.40
  5. Step 5: Solve for x
    x = 4,475,247,161.40/103,661.13
  6. Step 6: Final answer
    x = 43,171.89

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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.