Home / 142,714.45-196,937.49-78,170.82

Finding the Fourth Proportional to 142,714.45, 196,937.49 and 78,170.82

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Solution

The fourth proportional to 142,714.45, 196,937.49 and 78,170.82 is: 107,871.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,714.45 : 196,937.49 = 78,170.82 : x
  2. Step 2: Convert to fraction form
    142,714.45/196,937.49 = 78,170.82/x
  3. Step 3: Cross multiply
    142,714.45x = 196,937.49 × 78,170.82
  4. Step 4: Simplify right side
    142,714.45x = 15,394,764,636.67
  5. Step 5: Solve for x
    x = 15,394,764,636.67/142,714.45
  6. Step 6: Final answer
    x = 107,871.10

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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.