Home / 221,915.53-306,237.31-125,118.55

Finding the Fourth Proportional to 221,915.53, 306,237.31 and 125,118.55

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Solution

The fourth proportional to 221,915.53, 306,237.31 and 125,118.55 is: 172,660.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,915.53 : 306,237.31 = 125,118.55 : x
  2. Step 2: Convert to fraction form
    221,915.53/306,237.31 = 125,118.55/x
  3. Step 3: Cross multiply
    221,915.53x = 306,237.31 × 125,118.55
  4. Step 4: Simplify right side
    221,915.53x = 38,315,968,183.10
  5. Step 5: Solve for x
    x = 38,315,968,183.10/221,915.53
  6. Step 6: Final answer
    x = 172,660.15

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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.