Home / 143,320.68-197,788.68-79,659

Finding the Fourth Proportional to 143,320.68, 197,788.68 and 79,659

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Solution

The fourth proportional to 143,320.68, 197,788.68 and 79,659 is: 109,932.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,320.68 : 197,788.68 = 79,659 : x
  2. Step 2: Convert to fraction form
    143,320.68/197,788.68 = 79,659/x
  3. Step 3: Cross multiply
    143,320.68x = 197,788.68 × 79,659
  4. Step 4: Simplify right side
    143,320.68x = 15,755,648,460.12
  5. Step 5: Solve for x
    x = 15,755,648,460.12/143,320.68
  6. Step 6: Final answer
    x = 109,932.83

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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.