Home / 154,805.91-213,634.45-90,273.35

Finding the Fourth Proportional to 154,805.91, 213,634.45 and 90,273.35

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Solution

The fourth proportional to 154,805.91, 213,634.45 and 90,273.35 is: 124,578.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,805.91 : 213,634.45 = 90,273.35 : x
  2. Step 2: Convert to fraction form
    154,805.91/213,634.45 = 90,273.35/x
  3. Step 3: Cross multiply
    154,805.91x = 213,634.45 × 90,273.35
  4. Step 4: Simplify right side
    154,805.91x = 19,285,497,476.91
  5. Step 5: Solve for x
    x = 19,285,497,476.91/154,805.91
  6. Step 6: Final answer
    x = 124,578.56

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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.