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Finding the Fourth Proportional to 147,218.78, 203,161.95 and 80,150.78

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Solution

The fourth proportional to 147,218.78, 203,161.95 and 80,150.78 is: 110,608.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,218.78 : 203,161.95 = 80,150.78 : x
  2. Step 2: Convert to fraction form
    147,218.78/203,161.95 = 80,150.78/x
  3. Step 3: Cross multiply
    147,218.78x = 203,161.95 × 80,150.78
  4. Step 4: Simplify right side
    147,218.78x = 16,283,588,758.82
  5. Step 5: Solve for x
    x = 16,283,588,758.82/147,218.78
  6. Step 6: Final answer
    x = 110,608.09

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1.5x scale

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.