Home / 143,440.21-214,963.48-90,755.38

Finding the Fourth Proportional to 143,440.21, 214,963.48 and 90,755.38

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Solution

The fourth proportional to 143,440.21, 214,963.48 and 90,755.38 is: 136,008.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,440.21 : 214,963.48 = 90,755.38 : x
  2. Step 2: Convert to fraction form
    143,440.21/214,963.48 = 90,755.38/x
  3. Step 3: Cross multiply
    143,440.21x = 214,963.48 × 90,755.38
  4. Step 4: Simplify right side
    143,440.21x = 19,509,091,549.23
  5. Step 5: Solve for x
    x = 19,509,091,549.23/143,440.21
  6. Step 6: Final answer
    x = 136,008.53

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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.