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Finding the Fourth Proportional to 144,918.20, 217,415.70 and 51,414.20

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Solution

The fourth proportional to 144,918.20, 217,415.70 and 51,414.20 is: 77,134.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,918.20 : 217,415.70 = 51,414.20 : x
  2. Step 2: Convert to fraction form
    144,918.20/217,415.70 = 51,414.20/x
  3. Step 3: Cross multiply
    144,918.20x = 217,415.70 × 51,414.20
  4. Step 4: Simplify right side
    144,918.20x = 11,178,254,282.94
  5. Step 5: Solve for x
    x = 11,178,254,282.94/144,918.20
  6. Step 6: Final answer
    x = 77,134.92

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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.