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Finding the Fourth Proportional to 207,373.40, 311,109.44 and 67,132

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Solution

The fourth proportional to 207,373.40, 311,109.44 and 67,132 is: 100,713.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,373.40 : 311,109.44 = 67,132 : x
  2. Step 2: Convert to fraction form
    207,373.40/311,109.44 = 67,132/x
  3. Step 3: Cross multiply
    207,373.40x = 311,109.44 × 67,132
  4. Step 4: Simplify right side
    207,373.40x = 20,885,398,926.08
  5. Step 5: Solve for x
    x = 20,885,398,926.08/207,373.40
  6. Step 6: Final answer
    x = 100,713.97

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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.