Home / 143,319.72-197,439.33-100,218.61

Finding the Fourth Proportional to 143,319.72, 197,439.33 and 100,218.61

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Solution

The fourth proportional to 143,319.72, 197,439.33 and 100,218.61 is: 138,062.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,319.72 : 197,439.33 = 100,218.61 : x
  2. Step 2: Convert to fraction form
    143,319.72/197,439.33 = 100,218.61/x
  3. Step 3: Cross multiply
    143,319.72x = 197,439.33 × 100,218.61
  4. Step 4: Simplify right side
    143,319.72x = 19,787,095,211.93
  5. Step 5: Solve for x
    x = 19,787,095,211.93/143,319.72
  6. Step 6: Final answer
    x = 138,062.61

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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.