Home / 123,869.64-185,654.34-57,171

Finding the Fourth Proportional to 123,869.64, 185,654.34 and 57,171

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Solution

The fourth proportional to 123,869.64, 185,654.34 and 57,171 is: 85,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,869.64 : 185,654.34 = 57,171 : x
  2. Step 2: Convert to fraction form
    123,869.64/185,654.34 = 57,171/x
  3. Step 3: Cross multiply
    123,869.64x = 185,654.34 × 57,171
  4. Step 4: Simplify right side
    123,869.64x = 10,614,044,272.14
  5. Step 5: Solve for x
    x = 10,614,044,272.14/123,869.64
  6. Step 6: Final answer
    x = 85,687.21

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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.