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Finding the Fourth Proportional to 165,353.84, 248,065.08 and 86,446.64

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Solution

The fourth proportional to 165,353.84, 248,065.08 and 86,446.64 is: 129,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,353.84 : 248,065.08 = 86,446.64 : x
  2. Step 2: Convert to fraction form
    165,353.84/248,065.08 = 86,446.64/x
  3. Step 3: Cross multiply
    165,353.84x = 248,065.08 × 86,446.64
  4. Step 4: Simplify right side
    165,353.84x = 21,444,392,667.33
  5. Step 5: Solve for x
    x = 21,444,392,667.33/165,353.84
  6. Step 6: Final answer
    x = 129,687.90

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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.