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Finding the Fourth Proportional to 100,058.31, 150,139.20 and 43,937.82

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Solution

The fourth proportional to 100,058.31, 150,139.20 and 43,937.82 is: 65,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,058.31 : 150,139.20 = 43,937.82 : x
  2. Step 2: Convert to fraction form
    100,058.31/150,139.20 = 43,937.82/x
  3. Step 3: Cross multiply
    100,058.31x = 150,139.20 × 43,937.82
  4. Step 4: Simplify right side
    100,058.31x = 6,596,789,144.54
  5. Step 5: Solve for x
    x = 6,596,789,144.54/100,058.31
  6. Step 6: Final answer
    x = 65,929.45

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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.