Home / 143,435.28-197,937.84-79,771.71

Finding the Fourth Proportional to 143,435.28, 197,937.84 and 79,771.71

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Solution

The fourth proportional to 143,435.28, 197,937.84 and 79,771.71 is: 110,083.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,435.28 : 197,937.84 = 79,771.71 : x
  2. Step 2: Convert to fraction form
    143,435.28/197,937.84 = 79,771.71/x
  3. Step 3: Cross multiply
    143,435.28x = 197,937.84 × 79,771.71
  4. Step 4: Simplify right side
    143,435.28x = 15,789,839,970.51
  5. Step 5: Solve for x
    x = 15,789,839,970.51/143,435.28
  6. Step 6: Final answer
    x = 110,083.38

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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.