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Finding the Fourth Proportional to 111,648.70, 167,098.76 and 91,657.09

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Solution

The fourth proportional to 111,648.70, 167,098.76 and 91,657.09 is: 137,178.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,648.70 : 167,098.76 = 91,657.09 : x
  2. Step 2: Convert to fraction form
    111,648.70/167,098.76 = 91,657.09/x
  3. Step 3: Cross multiply
    111,648.70x = 167,098.76 × 91,657.09
  4. Step 4: Simplify right side
    111,648.70x = 15,315,786,084.21
  5. Step 5: Solve for x
    x = 15,315,786,084.21/111,648.70
  6. Step 6: Final answer
    x = 137,178.36

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1.5x scale

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.