Home / 143,055.18-197,412.39-79,391.34

Finding the Fourth Proportional to 143,055.18, 197,412.39 and 79,391.34

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Solution

The fourth proportional to 143,055.18, 197,412.39 and 79,391.34 is: 109,557.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,055.18 : 197,412.39 = 79,391.34 : x
  2. Step 2: Convert to fraction form
    143,055.18/197,412.39 = 79,391.34/x
  3. Step 3: Cross multiply
    143,055.18x = 197,412.39 × 79,391.34
  4. Step 4: Simplify right side
    143,055.18x = 15,672,834,174.70
  5. Step 5: Solve for x
    x = 15,672,834,174.70/143,055.18
  6. Step 6: Final answer
    x = 109,557.96

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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.