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Finding the Fourth Proportional to 138,544.43, 191,191.39 and 74,882.34

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Solution

The fourth proportional to 138,544.43, 191,191.39 and 74,882.34 is: 103,337.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,544.43 : 191,191.39 = 74,882.34 : x
  2. Step 2: Convert to fraction form
    138,544.43/191,191.39 = 74,882.34/x
  3. Step 3: Cross multiply
    138,544.43x = 191,191.39 × 74,882.34
  4. Step 4: Simplify right side
    138,544.43x = 14,316,858,483.85
  5. Step 5: Solve for x
    x = 14,316,858,483.85/138,544.43
  6. Step 6: Final answer
    x = 103,337.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.