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Finding the Fourth Proportional to 142,896.90, 197,188.11 and 79,232.34

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Solution

The fourth proportional to 142,896.90, 197,188.11 and 79,232.34 is: 109,335.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,896.90 : 197,188.11 = 79,232.34 : x
  2. Step 2: Convert to fraction form
    142,896.90/197,188.11 = 79,232.34/x
  3. Step 3: Cross multiply
    142,896.90x = 197,188.11 × 79,232.34
  4. Step 4: Simplify right side
    142,896.90x = 15,623,675,375.48
  5. Step 5: Solve for x
    x = 15,623,675,375.48/142,896.90
  6. Step 6: Final answer
    x = 109,335.30

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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.