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Finding the Fourth Proportional to 165,539.20, 248,308.80 and 65,723.20

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Solution

The fourth proportional to 165,539.20, 248,308.80 and 65,723.20 is: 98,584.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,539.20 : 248,308.80 = 65,723.20 : x
  2. Step 2: Convert to fraction form
    165,539.20/248,308.80 = 65,723.20/x
  3. Step 3: Cross multiply
    165,539.20x = 248,308.80 × 65,723.20
  4. Step 4: Simplify right side
    165,539.20x = 16,319,648,924.16
  5. Step 5: Solve for x
    x = 16,319,648,924.16/165,539.20
  6. Step 6: Final answer
    x = 98,584.80

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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.