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Finding the Fourth Proportional to 139,973.01, 209,916.44 and 40,106.44

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Solution

The fourth proportional to 139,973.01, 209,916.44 and 40,106.44 is: 60,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,973.01 : 209,916.44 = 40,106.44 : x
  2. Step 2: Convert to fraction form
    139,973.01/209,916.44 = 40,106.44/x
  3. Step 3: Cross multiply
    139,973.01x = 209,916.44 × 40,106.44
  4. Step 4: Simplify right side
    139,973.01x = 8,419,001,105.87
  5. Step 5: Solve for x
    x = 8,419,001,105.87/139,973.01
  6. Step 6: Final answer
    x = 60,147.32

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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.