Home / 103,431.72-155,144.48-28,556.44

Finding the Fourth Proportional to 103,431.72, 155,144.48 and 28,556.44

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Solution

The fourth proportional to 103,431.72, 155,144.48 and 28,556.44 is: 42,833.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,431.72 : 155,144.48 = 28,556.44 : x
  2. Step 2: Convert to fraction form
    103,431.72/155,144.48 = 28,556.44/x
  3. Step 3: Cross multiply
    103,431.72x = 155,144.48 × 28,556.44
  4. Step 4: Simplify right side
    103,431.72x = 4,430,374,034.45
  5. Step 5: Solve for x
    x = 4,430,374,034.45/103,431.72
  6. Step 6: Final answer
    x = 42,833.80

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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.