Home / 146,915.20-220,640.10-128,544.40

Finding the Fourth Proportional to 146,915.20, 220,640.10 and 128,544.40

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Solution

The fourth proportional to 146,915.20, 220,640.10 and 128,544.40 is: 193,050.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,915.20 : 220,640.10 = 128,544.40 : x
  2. Step 2: Convert to fraction form
    146,915.20/220,640.10 = 128,544.40/x
  3. Step 3: Cross multiply
    146,915.20x = 220,640.10 × 128,544.40
  4. Step 4: Simplify right side
    146,915.20x = 28,362,049,270.44
  5. Step 5: Solve for x
    x = 28,362,049,270.44/146,915.20
  6. Step 6: Final answer
    x = 193,050.48

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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.