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Finding the Fourth Proportional to 145,410.20, 218,129.70 and 50,625.80

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Solution

The fourth proportional to 145,410.20, 218,129.70 and 50,625.80 is: 75,943.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,410.20 : 218,129.70 = 50,625.80 : x
  2. Step 2: Convert to fraction form
    145,410.20/218,129.70 = 50,625.80/x
  3. Step 3: Cross multiply
    145,410.20x = 218,129.70 × 50,625.80
  4. Step 4: Simplify right side
    145,410.20x = 11,042,990,566.26
  5. Step 5: Solve for x
    x = 11,042,990,566.26/145,410.20
  6. Step 6: Final answer
    x = 75,943.71

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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.