Home / 143,101.50-197,486.68-82,680.08

Finding the Fourth Proportional to 143,101.50, 197,486.68 and 82,680.08

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Solution

The fourth proportional to 143,101.50, 197,486.68 and 82,680.08 is: 114,102.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,101.50 : 197,486.68 = 82,680.08 : x
  2. Step 2: Convert to fraction form
    143,101.50/197,486.68 = 82,680.08/x
  3. Step 3: Cross multiply
    143,101.50x = 197,486.68 × 82,680.08
  4. Step 4: Simplify right side
    143,101.50x = 16,328,214,501.33
  5. Step 5: Solve for x
    x = 16,328,214,501.33/143,101.50
  6. Step 6: Final answer
    x = 114,102.33

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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.