Home / 204,961.15-307,294.08-138,235.78

Finding the Fourth Proportional to 204,961.15, 307,294.08 and 138,235.78

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Solution

The fourth proportional to 204,961.15, 307,294.08 and 138,235.78 is: 207,254.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,961.15 : 307,294.08 = 138,235.78 : x
  2. Step 2: Convert to fraction form
    204,961.15/307,294.08 = 138,235.78/x
  3. Step 3: Cross multiply
    204,961.15x = 307,294.08 × 138,235.78
  4. Step 4: Simplify right side
    204,961.15x = 42,479,036,838.18
  5. Step 5: Solve for x
    x = 42,479,036,838.18/204,961.15
  6. Step 6: Final answer
    x = 207,254.09

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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.