Home / 143,053.56-197,414.04-79,391.40

Finding the Fourth Proportional to 143,053.56, 197,414.04 and 79,391.40

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Solution

The fourth proportional to 143,053.56, 197,414.04 and 79,391.40 is: 109,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,053.56 : 197,414.04 = 79,391.40 : x
  2. Step 2: Convert to fraction form
    143,053.56/197,414.04 = 79,391.40/x
  3. Step 3: Cross multiply
    143,053.56x = 197,414.04 × 79,391.40
  4. Step 4: Simplify right side
    143,053.56x = 15,672,977,015.26
  5. Step 5: Solve for x
    x = 15,672,977,015.26/143,053.56
  6. Step 6: Final answer
    x = 109,560.20

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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.