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Finding the Fourth Proportional to 146,793.80, 220,190.70 and 53,287.40

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Solution

The fourth proportional to 146,793.80, 220,190.70 and 53,287.40 is: 79,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,793.80 : 220,190.70 = 53,287.40 : x
  2. Step 2: Convert to fraction form
    146,793.80/220,190.70 = 53,287.40/x
  3. Step 3: Cross multiply
    146,793.80x = 220,190.70 × 53,287.40
  4. Step 4: Simplify right side
    146,793.80x = 11,733,389,907.18
  5. Step 5: Solve for x
    x = 11,733,389,907.18/146,793.80
  6. Step 6: Final answer
    x = 79,931.10

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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.