Home / 143,787.15-198,423.14-83,368.53

Finding the Fourth Proportional to 143,787.15, 198,423.14 and 83,368.53

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Solution

The fourth proportional to 143,787.15, 198,423.14 and 83,368.53 is: 115,046.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,787.15 : 198,423.14 = 83,368.53 : x
  2. Step 2: Convert to fraction form
    143,787.15/198,423.14 = 83,368.53/x
  3. Step 3: Cross multiply
    143,787.15x = 198,423.14 × 83,368.53
  4. Step 4: Simplify right side
    143,787.15x = 16,542,245,082.94
  5. Step 5: Solve for x
    x = 16,542,245,082.94/143,787.15
  6. Step 6: Final answer
    x = 115,046.76

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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.