Home / 103,781.64-155,676.56-28,908.33

Finding the Fourth Proportional to 103,781.64, 155,676.56 and 28,908.33

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Solution

The fourth proportional to 103,781.64, 155,676.56 and 28,908.33 is: 43,363.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,781.64 : 155,676.56 = 28,908.33 : x
  2. Step 2: Convert to fraction form
    103,781.64/155,676.56 = 28,908.33/x
  3. Step 3: Cross multiply
    103,781.64x = 155,676.56 × 28,908.33
  4. Step 4: Simplify right side
    103,781.64x = 4,500,349,369.74
  5. Step 5: Solve for x
    x = 4,500,349,369.74/103,781.64
  6. Step 6: Final answer
    x = 43,363.64

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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.