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Finding the Fourth Proportional to 144,857.70, 217,286.55 and 127,347.30

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Solution

The fourth proportional to 144,857.70, 217,286.55 and 127,347.30 is: 191,020.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,857.70 : 217,286.55 = 127,347.30 : x
  2. Step 2: Convert to fraction form
    144,857.70/217,286.55 = 127,347.30/x
  3. Step 3: Cross multiply
    144,857.70x = 217,286.55 × 127,347.30
  4. Step 4: Simplify right side
    144,857.70x = 27,670,855,468.82
  5. Step 5: Solve for x
    x = 27,670,855,468.82/144,857.70
  6. Step 6: Final answer
    x = 191,020.95

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1.5x scale

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.