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Finding the Fourth Proportional to 215,145.66, 296,910.66 and 124,505.88

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Solution

The fourth proportional to 215,145.66, 296,910.66 and 124,505.88 is: 171,823.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,145.66 : 296,910.66 = 124,505.88 : x
  2. Step 2: Convert to fraction form
    215,145.66/296,910.66 = 124,505.88/x
  3. Step 3: Cross multiply
    215,145.66x = 296,910.66 × 124,505.88
  4. Step 4: Simplify right side
    215,145.66x = 36,967,123,004.68
  5. Step 5: Solve for x
    x = 36,967,123,004.68/215,145.66
  6. Step 6: Final answer
    x = 171,823.70

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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.