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Finding the Fourth Proportional to 142,049.36, 212,871 and 104,313.44

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Solution

The fourth proportional to 142,049.36, 212,871 and 104,313.44 is: 156,321.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,049.36 : 212,871 = 104,313.44 : x
  2. Step 2: Convert to fraction form
    142,049.36/212,871 = 104,313.44/x
  3. Step 3: Cross multiply
    142,049.36x = 212,871 × 104,313.44
  4. Step 4: Simplify right side
    142,049.36x = 22,205,306,286.24
  5. Step 5: Solve for x
    x = 22,205,306,286.24/142,049.36
  6. Step 6: Final answer
    x = 156,321.06

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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.