Home / 136,287.42-187,969.92-88,556.28

Finding the Fourth Proportional to 136,287.42, 187,969.92 and 88,556.28

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Solution

The fourth proportional to 136,287.42, 187,969.92 and 88,556.28 is: 122,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,287.42 : 187,969.92 = 88,556.28 : x
  2. Step 2: Convert to fraction form
    136,287.42/187,969.92 = 88,556.28/x
  3. Step 3: Cross multiply
    136,287.42x = 187,969.92 × 88,556.28
  4. Step 4: Simplify right side
    136,287.42x = 16,645,916,867.10
  5. Step 5: Solve for x
    x = 16,645,916,867.10/136,287.42
  6. Step 6: Final answer
    x = 122,138.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.