Home / 143,318.72-197,437.95-100,217.61

Finding the Fourth Proportional to 143,318.72, 197,437.95 and 100,217.61

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Solution

The fourth proportional to 143,318.72, 197,437.95 and 100,217.61 is: 138,061.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,318.72 : 197,437.95 = 100,217.61 : x
  2. Step 2: Convert to fraction form
    143,318.72/197,437.95 = 100,217.61/x
  3. Step 3: Cross multiply
    143,318.72x = 197,437.95 × 100,217.61
  4. Step 4: Simplify right side
    143,318.72x = 19,786,759,472.30
  5. Step 5: Solve for x
    x = 19,786,759,472.30/143,318.72
  6. Step 6: Final answer
    x = 138,061.24

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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.