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Finding the Fourth Proportional to 206,172.13, 309,291.81 and 73,023.52

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Solution

The fourth proportional to 206,172.13, 309,291.81 and 73,023.52 is: 109,547.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,172.13 : 309,291.81 = 73,023.52 : x
  2. Step 2: Convert to fraction form
    206,172.13/309,291.81 = 73,023.52/x
  3. Step 3: Cross multiply
    206,172.13x = 309,291.81 × 73,023.52
  4. Step 4: Simplify right side
    206,172.13x = 22,585,576,673.37
  5. Step 5: Solve for x
    x = 22,585,576,673.37/206,172.13
  6. Step 6: Final answer
    x = 109,547.19

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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.