Home / 143,419.72-197,904.06-79,747.24

Finding the Fourth Proportional to 143,419.72, 197,904.06 and 79,747.24

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Solution

The fourth proportional to 143,419.72, 197,904.06 and 79,747.24 is: 110,042.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,419.72 : 197,904.06 = 79,747.24 : x
  2. Step 2: Convert to fraction form
    143,419.72/197,904.06 = 79,747.24/x
  3. Step 3: Cross multiply
    143,419.72x = 197,904.06 × 79,747.24
  4. Step 4: Simplify right side
    143,419.72x = 15,782,302,569.79
  5. Step 5: Solve for x
    x = 15,782,302,569.79/143,419.72
  6. Step 6: Final answer
    x = 110,042.77

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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.