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Finding the Fourth Proportional to 111,587.01, 167,169.42 and 86,504.15

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Solution

The fourth proportional to 111,587.01, 167,169.42 and 86,504.15 is: 129,592.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,587.01 : 167,169.42 = 86,504.15 : x
  2. Step 2: Convert to fraction form
    111,587.01/167,169.42 = 86,504.15/x
  3. Step 3: Cross multiply
    111,587.01x = 167,169.42 × 86,504.15
  4. Step 4: Simplify right side
    111,587.01x = 14,460,847,747.25
  5. Step 5: Solve for x
    x = 14,460,847,747.25/111,587.01
  6. Step 6: Final answer
    x = 129,592.57

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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.