Home / 91,257.36-125,994.42-81,680.64

Finding the Fourth Proportional to 91,257.36, 125,994.42 and 81,680.64

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Solution

The fourth proportional to 91,257.36, 125,994.42 and 81,680.64 is: 112,772.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,257.36 : 125,994.42 = 81,680.64 : x
  2. Step 2: Convert to fraction form
    91,257.36/125,994.42 = 81,680.64/x
  3. Step 3: Cross multiply
    91,257.36x = 125,994.42 × 81,680.64
  4. Step 4: Simplify right side
    91,257.36x = 10,291,304,862.03
  5. Step 5: Solve for x
    x = 10,291,304,862.03/91,257.36
  6. Step 6: Final answer
    x = 112,772.33

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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.