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Finding the Fourth Proportional to 151,174.50, 208,629.42 and 86,654.46

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Solution

The fourth proportional to 151,174.50, 208,629.42 and 86,654.46 is: 119,588.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,174.50 : 208,629.42 = 86,654.46 : x
  2. Step 2: Convert to fraction form
    151,174.50/208,629.42 = 86,654.46/x
  3. Step 3: Cross multiply
    151,174.50x = 208,629.42 × 86,654.46
  4. Step 4: Simplify right side
    151,174.50x = 18,078,669,730.21
  5. Step 5: Solve for x
    x = 18,078,669,730.21/151,174.50
  6. Step 6: Final answer
    x = 119,588.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.