Home / 143,039.95-197,404.47-79,377.91

Finding the Fourth Proportional to 143,039.95, 197,404.47 and 79,377.91

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Solution

The fourth proportional to 143,039.95, 197,404.47 and 79,377.91 is: 109,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,039.95 : 197,404.47 = 79,377.91 : x
  2. Step 2: Convert to fraction form
    143,039.95/197,404.47 = 79,377.91/x
  3. Step 3: Cross multiply
    143,039.95x = 197,404.47 × 79,377.91
  4. Step 4: Simplify right side
    143,039.95x = 15,669,553,759.75
  5. Step 5: Solve for x
    x = 15,669,553,759.75/143,039.95
  6. Step 6: Final answer
    x = 109,546.70

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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.