Home / 83,710.40-115,361.28-82,173.44

Finding the Fourth Proportional to 83,710.40, 115,361.28 and 82,173.44

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Solution

The fourth proportional to 83,710.40, 115,361.28 and 82,173.44 is: 113,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,710.40 : 115,361.28 = 82,173.44 : x
  2. Step 2: Convert to fraction form
    83,710.40/115,361.28 = 82,173.44/x
  3. Step 3: Cross multiply
    83,710.40x = 115,361.28 × 82,173.44
  4. Step 4: Simplify right side
    83,710.40x = 9,479,633,220.40
  5. Step 5: Solve for x
    x = 9,479,633,220.40/83,710.40
  6. Step 6: Final answer
    x = 113,243.20

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1.5x scale

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.