Home / 103,431.73-155,144.51-28,556.45

Finding the Fourth Proportional to 103,431.73, 155,144.51 and 28,556.45

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Solution

The fourth proportional to 103,431.73, 155,144.51 and 28,556.45 is: 42,833.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,431.73 : 155,144.51 = 28,556.45 : x
  2. Step 2: Convert to fraction form
    103,431.73/155,144.51 = 28,556.45/x
  3. Step 3: Cross multiply
    103,431.73x = 155,144.51 × 28,556.45
  4. Step 4: Simplify right side
    103,431.73x = 4,430,376,442.59
  5. Step 5: Solve for x
    x = 4,430,376,442.59/103,431.73
  6. Step 6: Final answer
    x = 42,833.82

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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.