Home / 143,432.60-197,943.68-82,991.55

Finding the Fourth Proportional to 143,432.60, 197,943.68 and 82,991.55

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Solution

The fourth proportional to 143,432.60, 197,943.68 and 82,991.55 is: 114,532.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,432.60 : 197,943.68 = 82,991.55 : x
  2. Step 2: Convert to fraction form
    143,432.60/197,943.68 = 82,991.55/x
  3. Step 3: Cross multiply
    143,432.60x = 197,943.68 × 82,991.55
  4. Step 4: Simplify right side
    143,432.60x = 16,427,652,400.95
  5. Step 5: Solve for x
    x = 16,427,652,400.95/143,432.60
  6. Step 6: Final answer
    x = 114,532.21

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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.