Home / 109,915.20-164,743.20-57,297.60

Finding the Fourth Proportional to 109,915.20, 164,743.20 and 57,297.60

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Solution

The fourth proportional to 109,915.20, 164,743.20 and 57,297.60 is: 85,878.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,915.20 : 164,743.20 = 57,297.60 : x
  2. Step 2: Convert to fraction form
    109,915.20/164,743.20 = 57,297.60/x
  3. Step 3: Cross multiply
    109,915.20x = 164,743.20 × 57,297.60
  4. Step 4: Simplify right side
    109,915.20x = 9,439,389,976.32
  5. Step 5: Solve for x
    x = 9,439,389,976.32/109,915.20
  6. Step 6: Final answer
    x = 85,878.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.