Home / 143,372.22-197,858.64-78,844.10

Finding the Fourth Proportional to 143,372.22, 197,858.64 and 78,844.10

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Solution

The fourth proportional to 143,372.22, 197,858.64 and 78,844.10 is: 108,807.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,372.22 : 197,858.64 = 78,844.10 : x
  2. Step 2: Convert to fraction form
    143,372.22/197,858.64 = 78,844.10/x
  3. Step 3: Cross multiply
    143,372.22x = 197,858.64 × 78,844.10
  4. Step 4: Simplify right side
    143,372.22x = 15,599,986,398.02
  5. Step 5: Solve for x
    x = 15,599,986,398.02/143,372.22
  6. Step 6: Final answer
    x = 108,807.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.