Home / 143,938.66-198,635.70-80,280.58

Finding the Fourth Proportional to 143,938.66, 198,635.70 and 80,280.58

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Solution

The fourth proportional to 143,938.66, 198,635.70 and 80,280.58 is: 110,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,938.66 : 198,635.70 = 80,280.58 : x
  2. Step 2: Convert to fraction form
    143,938.66/198,635.70 = 80,280.58/x
  3. Step 3: Cross multiply
    143,938.66x = 198,635.70 × 80,280.58
  4. Step 4: Simplify right side
    143,938.66x = 15,946,589,204.71
  5. Step 5: Solve for x
    x = 15,946,589,204.71/143,938.66
  6. Step 6: Final answer
    x = 110,787.40

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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.