Home / 143,938.20-198,635.58-80,280.10

Finding the Fourth Proportional to 143,938.20, 198,635.58 and 80,280.10

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Solution

The fourth proportional to 143,938.20, 198,635.58 and 80,280.10 is: 110,787.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,938.20 : 198,635.58 = 80,280.10 : x
  2. Step 2: Convert to fraction form
    143,938.20/198,635.58 = 80,280.10/x
  3. Step 3: Cross multiply
    143,938.20x = 198,635.58 × 80,280.10
  4. Step 4: Simplify right side
    143,938.20x = 15,946,484,225.96
  5. Step 5: Solve for x
    x = 15,946,484,225.96/143,938.20
  6. Step 6: Final answer
    x = 110,787.02

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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.