Home / 146,920.20-220,647.60-128,549.40

Finding the Fourth Proportional to 146,920.20, 220,647.60 and 128,549.40

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Solution

The fourth proportional to 146,920.20, 220,647.60 and 128,549.40 is: 193,057.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,920.20 : 220,647.60 = 128,549.40 : x
  2. Step 2: Convert to fraction form
    146,920.20/220,647.60 = 128,549.40/x
  3. Step 3: Cross multiply
    146,920.20x = 220,647.60 × 128,549.40
  4. Step 4: Simplify right side
    146,920.20x = 28,364,116,591.44
  5. Step 5: Solve for x
    x = 28,364,116,591.44/146,920.20
  6. Step 6: Final answer
    x = 193,057.98

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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.