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Finding the Fourth Proportional to 165,871.20, 248,839.20 and 66,014.40

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Solution

The fourth proportional to 165,871.20, 248,839.20 and 66,014.40 is: 99,034.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,871.20 : 248,839.20 = 66,014.40 : x
  2. Step 2: Convert to fraction form
    165,871.20/248,839.20 = 66,014.40/x
  3. Step 3: Cross multiply
    165,871.20x = 248,839.20 × 66,014.40
  4. Step 4: Simplify right side
    165,871.20x = 16,426,970,484.48
  5. Step 5: Solve for x
    x = 16,426,970,484.48/165,871.20
  6. Step 6: Final answer
    x = 99,034.49

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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.