Home / 146,629.20-220,211.10-128,258.40

Finding the Fourth Proportional to 146,629.20, 220,211.10 and 128,258.40

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Solution

The fourth proportional to 146,629.20, 220,211.10 and 128,258.40 is: 192,621.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,629.20 : 220,211.10 = 128,258.40 : x
  2. Step 2: Convert to fraction form
    146,629.20/220,211.10 = 128,258.40/x
  3. Step 3: Cross multiply
    146,629.20x = 220,211.10 × 128,258.40
  4. Step 4: Simplify right side
    146,629.20x = 28,243,923,348.24
  5. Step 5: Solve for x
    x = 28,243,923,348.24/146,629.20
  6. Step 6: Final answer
    x = 192,621.41

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1.5x scale

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.