Home / 135,862.44-187,480.14-78,504.36

Finding the Fourth Proportional to 135,862.44, 187,480.14 and 78,504.36

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Solution

The fourth proportional to 135,862.44, 187,480.14 and 78,504.36 is: 108,330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,862.44 : 187,480.14 = 78,504.36 : x
  2. Step 2: Convert to fraction form
    135,862.44/187,480.14 = 78,504.36/x
  3. Step 3: Cross multiply
    135,862.44x = 187,480.14 × 78,504.36
  4. Step 4: Simplify right side
    135,862.44x = 14,718,008,403.41
  5. Step 5: Solve for x
    x = 14,718,008,403.41/135,862.44
  6. Step 6: Final answer
    x = 108,330.22

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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.