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Finding the Fourth Proportional to 203,821.26, 305,712.45 and 124,894.86

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Solution

The fourth proportional to 203,821.26, 305,712.45 and 124,894.86 is: 187,330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,821.26 : 305,712.45 = 124,894.86 : x
  2. Step 2: Convert to fraction form
    203,821.26/305,712.45 = 124,894.86/x
  3. Step 3: Cross multiply
    203,821.26x = 305,712.45 × 124,894.86
  4. Step 4: Simplify right side
    203,821.26x = 38,181,913,643.01
  5. Step 5: Solve for x
    x = 38,181,913,643.01/203,821.26
  6. Step 6: Final answer
    x = 187,330.38

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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.