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Finding the Fourth Proportional to 146,821.70, 220,232.55 and 127,138.70

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Solution

The fourth proportional to 146,821.70, 220,232.55 and 127,138.70 is: 190,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,821.70 : 220,232.55 = 127,138.70 : x
  2. Step 2: Convert to fraction form
    146,821.70/220,232.55 = 127,138.70/x
  3. Step 3: Cross multiply
    146,821.70x = 220,232.55 × 127,138.70
  4. Step 4: Simplify right side
    146,821.70x = 28,000,080,104.69
  5. Step 5: Solve for x
    x = 28,000,080,104.69/146,821.70
  6. Step 6: Final answer
    x = 190,708.05

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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.