Home / 143,790.16-198,427.28-83,371.54

Finding the Fourth Proportional to 143,790.16, 198,427.28 and 83,371.54

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Solution

The fourth proportional to 143,790.16, 198,427.28 and 83,371.54 is: 115,050.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,790.16 : 198,427.28 = 83,371.54 : x
  2. Step 2: Convert to fraction form
    143,790.16/198,427.28 = 83,371.54/x
  3. Step 3: Cross multiply
    143,790.16x = 198,427.28 × 83,371.54
  4. Step 4: Simplify right side
    143,790.16x = 16,543,187,911.61
  5. Step 5: Solve for x
    x = 16,543,187,911.61/143,790.16
  6. Step 6: Final answer
    x = 115,050.90

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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.