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Finding the Fourth Proportional to 158,324.68, 218,485.38 and 85,727

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Solution

The fourth proportional to 158,324.68, 218,485.38 and 85,727 is: 118,301.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,324.68 : 218,485.38 = 85,727 : x
  2. Step 2: Convert to fraction form
    158,324.68/218,485.38 = 85,727/x
  3. Step 3: Cross multiply
    158,324.68x = 218,485.38 × 85,727
  4. Step 4: Simplify right side
    158,324.68x = 18,730,096,171.26
  5. Step 5: Solve for x
    x = 18,730,096,171.26/158,324.68
  6. Step 6: Final answer
    x = 118,301.81

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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.