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Finding the Fourth Proportional to 169,693.20, 254,539.80 and 143,449.20

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Solution

The fourth proportional to 169,693.20, 254,539.80 and 143,449.20 is: 215,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,693.20 : 254,539.80 = 143,449.20 : x
  2. Step 2: Convert to fraction form
    169,693.20/254,539.80 = 143,449.20/x
  3. Step 3: Cross multiply
    169,693.20x = 254,539.80 × 143,449.20
  4. Step 4: Simplify right side
    169,693.20x = 36,513,530,678.16
  5. Step 5: Solve for x
    x = 36,513,530,678.16/169,693.20
  6. Step 6: Final answer
    x = 215,173.80

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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.