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Finding the Fourth Proportional to 146,743.20, 220,114.80 and 68,011.20

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Solution

The fourth proportional to 146,743.20, 220,114.80 and 68,011.20 is: 102,016.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,743.20 : 220,114.80 = 68,011.20 : x
  2. Step 2: Convert to fraction form
    146,743.20/220,114.80 = 68,011.20/x
  3. Step 3: Cross multiply
    146,743.20x = 220,114.80 × 68,011.20
  4. Step 4: Simplify right side
    146,743.20x = 14,970,271,685.76
  5. Step 5: Solve for x
    x = 14,970,271,685.76/146,743.20
  6. Step 6: Final answer
    x = 102,016.80

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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.