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Finding the Fourth Proportional to 149,812.34, 206,389.22 and 104,407.79

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Solution

The fourth proportional to 149,812.34, 206,389.22 and 104,407.79 is: 143,837.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,812.34 : 206,389.22 = 104,407.79 : x
  2. Step 2: Convert to fraction form
    149,812.34/206,389.22 = 104,407.79/x
  3. Step 3: Cross multiply
    149,812.34x = 206,389.22 × 104,407.79
  4. Step 4: Simplify right side
    149,812.34x = 21,548,640,786.04
  5. Step 5: Solve for x
    x = 21,548,640,786.04/149,812.34
  6. Step 6: Final answer
    x = 143,837.56

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Why These Related Problems?

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