Home / 217,921.42-300,755.91-131,927.79

Finding the Fourth Proportional to 217,921.42, 300,755.91 and 131,927.79

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Solution

The fourth proportional to 217,921.42, 300,755.91 and 131,927.79 is: 182,075.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,921.42 : 300,755.91 = 131,927.79 : x
  2. Step 2: Convert to fraction form
    217,921.42/300,755.91 = 131,927.79/x
  3. Step 3: Cross multiply
    217,921.42x = 300,755.91 × 131,927.79
  4. Step 4: Simplify right side
    217,921.42x = 39,678,062,535.74
  5. Step 5: Solve for x
    x = 39,678,062,535.74/217,921.42
  6. Step 6: Final answer
    x = 182,075.09

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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.