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Finding the Fourth Proportional to 171,988.64, 258,027.51 and 65,374.42

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Solution

The fourth proportional to 171,988.64, 258,027.51 and 65,374.42 is: 98,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,988.64 : 258,027.51 = 65,374.42 : x
  2. Step 2: Convert to fraction form
    171,988.64/258,027.51 = 65,374.42/x
  3. Step 3: Cross multiply
    171,988.64x = 258,027.51 × 65,374.42
  4. Step 4: Simplify right side
    171,988.64x = 16,868,398,410.38
  5. Step 5: Solve for x
    x = 16,868,398,410.38/171,988.64
  6. Step 6: Final answer
    x = 98,078.56

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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.