Home / 143,634.94-198,216.18-79,987.74

Finding the Fourth Proportional to 143,634.94, 198,216.18 and 79,987.74

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Solution

The fourth proportional to 143,634.94, 198,216.18 and 79,987.74 is: 110,383.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,634.94 : 198,216.18 = 79,987.74 : x
  2. Step 2: Convert to fraction form
    143,634.94/198,216.18 = 79,987.74/x
  3. Step 3: Cross multiply
    143,634.94x = 198,216.18 × 79,987.74
  4. Step 4: Simplify right side
    143,634.94x = 15,854,864,269.63
  5. Step 5: Solve for x
    x = 15,854,864,269.63/143,634.94
  6. Step 6: Final answer
    x = 110,383.06

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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.