Home / 143,214.84-197,636.40-79,558.56

Finding the Fourth Proportional to 143,214.84, 197,636.40 and 79,558.56

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Solution

The fourth proportional to 143,214.84, 197,636.40 and 79,558.56 is: 109,790.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,214.84 : 197,636.40 = 79,558.56 : x
  2. Step 2: Convert to fraction form
    143,214.84/197,636.40 = 79,558.56/x
  3. Step 3: Cross multiply
    143,214.84x = 197,636.40 × 79,558.56
  4. Step 4: Simplify right side
    143,214.84x = 15,723,667,387.58
  5. Step 5: Solve for x
    x = 15,723,667,387.58/143,214.84
  6. Step 6: Final answer
    x = 109,790.77

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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.