Home / 143,377.96-197,864.83-78,843.14

Finding the Fourth Proportional to 143,377.96, 197,864.83 and 78,843.14

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Solution

The fourth proportional to 143,377.96, 197,864.83 and 78,843.14 is: 108,805.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,377.96 : 197,864.83 = 78,843.14 : x
  2. Step 2: Convert to fraction form
    143,377.96/197,864.83 = 78,843.14/x
  3. Step 3: Cross multiply
    143,377.96x = 197,864.83 × 78,843.14
  4. Step 4: Simplify right side
    143,377.96x = 15,600,284,492.77
  5. Step 5: Solve for x
    x = 15,600,284,492.77/143,377.96
  6. Step 6: Final answer
    x = 108,805.32

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1.5x scale

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.