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Finding the Fourth Proportional to 111,806.70, 167,710.05 and 76,814.70

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Solution

The fourth proportional to 111,806.70, 167,710.05 and 76,814.70 is: 115,222.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,806.70 : 167,710.05 = 76,814.70 : x
  2. Step 2: Convert to fraction form
    111,806.70/167,710.05 = 76,814.70/x
  3. Step 3: Cross multiply
    111,806.70x = 167,710.05 × 76,814.70
  4. Step 4: Simplify right side
    111,806.70x = 12,882,597,177.74
  5. Step 5: Solve for x
    x = 12,882,597,177.74/111,806.70
  6. Step 6: Final answer
    x = 115,222.05

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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.