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Finding the Fourth Proportional to 143,145.20, 214,717.79 and 44,649.20

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Solution

The fourth proportional to 143,145.20, 214,717.79 and 44,649.20 is: 66,973.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,145.20 : 214,717.79 = 44,649.20 : x
  2. Step 2: Convert to fraction form
    143,145.20/214,717.79 = 44,649.20/x
  3. Step 3: Cross multiply
    143,145.20x = 214,717.79 × 44,649.20
  4. Step 4: Simplify right side
    143,145.20x = 9,586,976,252.43
  5. Step 5: Solve for x
    x = 9,586,976,252.43/143,145.20
  6. Step 6: Final answer
    x = 66,973.79

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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.