Home / 143,731.70-198,349.80-83,337.56

Finding the Fourth Proportional to 143,731.70, 198,349.80 and 83,337.56

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Solution

The fourth proportional to 143,731.70, 198,349.80 and 83,337.56 is: 115,005.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,731.70 : 198,349.80 = 83,337.56 : x
  2. Step 2: Convert to fraction form
    143,731.70/198,349.80 = 83,337.56/x
  3. Step 3: Cross multiply
    143,731.70x = 198,349.80 × 83,337.56
  4. Step 4: Simplify right side
    143,731.70x = 16,529,988,358.49
  5. Step 5: Solve for x
    x = 16,529,988,358.49/143,731.70
  6. Step 6: Final answer
    x = 115,005.86

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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.