Home / 143,720.66-196,898.24-138,333.60

Finding the Fourth Proportional to 143,720.66, 196,898.24 and 138,333.60

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Solution

The fourth proportional to 143,720.66, 196,898.24 and 138,333.60 is: 189,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,720.66 : 196,898.24 = 138,333.60 : x
  2. Step 2: Convert to fraction form
    143,720.66/196,898.24 = 138,333.60/x
  3. Step 3: Cross multiply
    143,720.66x = 196,898.24 × 138,333.60
  4. Step 4: Simplify right side
    143,720.66x = 27,237,642,372.86
  5. Step 5: Solve for x
    x = 27,237,642,372.86/143,720.66
  6. Step 6: Final answer
    x = 189,517.93

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.