Home / 143,086.11-197,448.95-79,418.90

Finding the Fourth Proportional to 143,086.11, 197,448.95 and 79,418.90

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Solution

The fourth proportional to 143,086.11, 197,448.95 and 79,418.90 is: 109,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,086.11 : 197,448.95 = 79,418.90 : x
  2. Step 2: Convert to fraction form
    143,086.11/197,448.95 = 79,418.90/x
  3. Step 3: Cross multiply
    143,086.11x = 197,448.95 × 79,418.90
  4. Step 4: Simplify right side
    143,086.11x = 15,681,178,639.21
  5. Step 5: Solve for x
    x = 15,681,178,639.21/143,086.11
  6. Step 6: Final answer
    x = 109,592.60

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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.