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Finding the Fourth Proportional to 103,556.61, 154,578.92 and 88,859.97

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Solution

The fourth proportional to 103,556.61, 154,578.92 and 88,859.97 is: 132,641.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,556.61 : 154,578.92 = 88,859.97 : x
  2. Step 2: Convert to fraction form
    103,556.61/154,578.92 = 88,859.97/x
  3. Step 3: Cross multiply
    103,556.61x = 154,578.92 × 88,859.97
  4. Step 4: Simplify right side
    103,556.61x = 13,735,877,749.53
  5. Step 5: Solve for x
    x = 13,735,877,749.53/103,556.61
  6. Step 6: Final answer
    x = 132,641.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.