Home / 143,440.39-214,963.74-90,755.56

Finding the Fourth Proportional to 143,440.39, 214,963.74 and 90,755.56

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Solution

The fourth proportional to 143,440.39, 214,963.74 and 90,755.56 is: 136,008.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,440.39 : 214,963.74 = 90,755.56 : x
  2. Step 2: Convert to fraction form
    143,440.39/214,963.74 = 90,755.56/x
  3. Step 3: Cross multiply
    143,440.39x = 214,963.74 × 90,755.56
  4. Step 4: Simplify right side
    143,440.39x = 19,509,153,528.58
  5. Step 5: Solve for x
    x = 19,509,153,528.58/143,440.39
  6. Step 6: Final answer
    x = 136,008.79

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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.