Home / 142,712.49-196,949.72-79,050.28

Finding the Fourth Proportional to 142,712.49, 196,949.72 and 79,050.28

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Solution

The fourth proportional to 142,712.49, 196,949.72 and 79,050.28 is: 109,092.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,712.49 : 196,949.72 = 79,050.28 : x
  2. Step 2: Convert to fraction form
    142,712.49/196,949.72 = 79,050.28/x
  3. Step 3: Cross multiply
    142,712.49x = 196,949.72 × 79,050.28
  4. Step 4: Simplify right side
    142,712.49x = 15,568,930,511.92
  5. Step 5: Solve for x
    x = 15,568,930,511.92/142,712.49
  6. Step 6: Final answer
    x = 109,092.98

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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.