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Finding the Fourth Proportional to 167,435.50, 231,061.08 and 91,988.86

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Solution

The fourth proportional to 167,435.50, 231,061.08 and 91,988.86 is: 126,944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,435.50 : 231,061.08 = 91,988.86 : x
  2. Step 2: Convert to fraction form
    167,435.50/231,061.08 = 91,988.86/x
  3. Step 3: Cross multiply
    167,435.50x = 231,061.08 × 91,988.86
  4. Step 4: Simplify right side
    167,435.50x = 21,255,045,339.57
  5. Step 5: Solve for x
    x = 21,255,045,339.57/167,435.50
  6. Step 6: Final answer
    x = 126,944.68

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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.