Home / 103,540.26-142,532.96-76,632.06

Finding the Fourth Proportional to 103,540.26, 142,532.96 and 76,632.06

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Solution

The fourth proportional to 103,540.26, 142,532.96 and 76,632.06 is: 105,491.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,540.26 : 142,532.96 = 76,632.06 : x
  2. Step 2: Convert to fraction form
    103,540.26/142,532.96 = 76,632.06/x
  3. Step 3: Cross multiply
    103,540.26x = 142,532.96 × 76,632.06
  4. Step 4: Simplify right side
    103,540.26x = 10,922,593,959.54
  5. Step 5: Solve for x
    x = 10,922,593,959.54/103,540.26
  6. Step 6: Final answer
    x = 105,491.27

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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.