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Finding the Fourth Proportional to 225,894.35, 311,736.61 and 123,920.01

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Solution

The fourth proportional to 225,894.35, 311,736.61 and 123,920.01 is: 171,010.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,894.35 : 311,736.61 = 123,920.01 : x
  2. Step 2: Convert to fraction form
    225,894.35/311,736.61 = 123,920.01/x
  3. Step 3: Cross multiply
    225,894.35x = 311,736.61 × 123,920.01
  4. Step 4: Simplify right side
    225,894.35x = 38,630,403,983.47
  5. Step 5: Solve for x
    x = 38,630,403,983.47/225,894.35
  6. Step 6: Final answer
    x = 171,010.93

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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.