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Finding the Fourth Proportional to 146,756.80, 220,135.20 and 121,846.60

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Solution

The fourth proportional to 146,756.80, 220,135.20 and 121,846.60 is: 182,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,756.80 : 220,135.20 = 121,846.60 : x
  2. Step 2: Convert to fraction form
    146,756.80/220,135.20 = 121,846.60/x
  3. Step 3: Cross multiply
    146,756.80x = 220,135.20 × 121,846.60
  4. Step 4: Simplify right side
    146,756.80x = 26,822,725,660.32
  5. Step 5: Solve for x
    x = 26,822,725,660.32/146,756.80
  6. Step 6: Final answer
    x = 182,769.90

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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.