Home / 103,440.75-155,067.52-71,865.60

Finding the Fourth Proportional to 103,440.75, 155,067.52 and 71,865.60

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Solution

The fourth proportional to 103,440.75, 155,067.52 and 71,865.60 is: 107,733.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,440.75 : 155,067.52 = 71,865.60 : x
  2. Step 2: Convert to fraction form
    103,440.75/155,067.52 = 71,865.60/x
  3. Step 3: Cross multiply
    103,440.75x = 155,067.52 × 71,865.60
  4. Step 4: Simplify right side
    103,440.75x = 11,144,020,365.31
  5. Step 5: Solve for x
    x = 11,144,020,365.31/103,440.75
  6. Step 6: Final answer
    x = 107,733.37

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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.