Home / 143,938.28-198,644.55-83,508.95

Finding the Fourth Proportional to 143,938.28, 198,644.55 and 83,508.95

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Solution

The fourth proportional to 143,938.28, 198,644.55 and 83,508.95 is: 115,247.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,938.28 : 198,644.55 = 83,508.95 : x
  2. Step 2: Convert to fraction form
    143,938.28/198,644.55 = 83,508.95/x
  3. Step 3: Cross multiply
    143,938.28x = 198,644.55 × 83,508.95
  4. Step 4: Simplify right side
    143,938.28x = 16,588,596,800.50
  5. Step 5: Solve for x
    x = 16,588,596,800.50/143,938.28
  6. Step 6: Final answer
    x = 115,247.99

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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.