Home / 142,930.70-197,256.48-79,289

Finding the Fourth Proportional to 142,930.70, 197,256.48 and 79,289

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Solution

The fourth proportional to 142,930.70, 197,256.48 and 79,289 is: 109,425.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,930.70 : 197,256.48 = 79,289 : x
  2. Step 2: Convert to fraction form
    142,930.70/197,256.48 = 79,289/x
  3. Step 3: Cross multiply
    142,930.70x = 197,256.48 × 79,289
  4. Step 4: Simplify right side
    142,930.70x = 15,640,269,042.72
  5. Step 5: Solve for x
    x = 15,640,269,042.72/142,930.70
  6. Step 6: Final answer
    x = 109,425.54

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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.