Home / 205,508.90-308,438.30-80,937.38

Finding the Fourth Proportional to 205,508.90, 308,438.30 and 80,937.38

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Solution

The fourth proportional to 205,508.90, 308,438.30 and 80,937.38 is: 121,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,508.90 : 308,438.30 = 80,937.38 : x
  2. Step 2: Convert to fraction form
    205,508.90/308,438.30 = 80,937.38/x
  3. Step 3: Cross multiply
    205,508.90x = 308,438.30 × 80,937.38
  4. Step 4: Simplify right side
    205,508.90x = 24,964,186,553.81
  5. Step 5: Solve for x
    x = 24,964,186,553.81/205,508.90
  6. Step 6: Final answer
    x = 121,474.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.