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Finding the Fourth Proportional to 139,884.09, 209,888.17 and 73,308.41

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Solution

The fourth proportional to 139,884.09, 209,888.17 and 73,308.41 is: 109,995.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,884.09 : 209,888.17 = 73,308.41 : x
  2. Step 2: Convert to fraction form
    139,884.09/209,888.17 = 73,308.41/x
  3. Step 3: Cross multiply
    139,884.09x = 209,888.17 × 73,308.41
  4. Step 4: Simplify right side
    139,884.09x = 15,386,568,361.96
  5. Step 5: Solve for x
    x = 15,386,568,361.96/139,884.09
  6. Step 6: Final answer
    x = 109,995.13

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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.