Home / 98,185.12-135,490.64-55,738.08

Finding the Fourth Proportional to 98,185.12, 135,490.64 and 55,738.08

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Solution

The fourth proportional to 98,185.12, 135,490.64 and 55,738.08 is: 76,915.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,185.12 : 135,490.64 = 55,738.08 : x
  2. Step 2: Convert to fraction form
    98,185.12/135,490.64 = 55,738.08/x
  3. Step 3: Cross multiply
    98,185.12x = 135,490.64 × 55,738.08
  4. Step 4: Simplify right side
    98,185.12x = 7,551,988,131.57
  5. Step 5: Solve for x
    x = 7,551,988,131.57/98,185.12
  6. Step 6: Final answer
    x = 76,915.81

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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.