Home / 142,260.72-196,317.45-78,604.44

Finding the Fourth Proportional to 142,260.72, 196,317.45 and 78,604.44

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Solution

The fourth proportional to 142,260.72, 196,317.45 and 78,604.44 is: 108,472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,260.72 : 196,317.45 = 78,604.44 : x
  2. Step 2: Convert to fraction form
    142,260.72/196,317.45 = 78,604.44/x
  3. Step 3: Cross multiply
    142,260.72x = 196,317.45 × 78,604.44
  4. Step 4: Simplify right side
    142,260.72x = 15,431,422,483.29
  5. Step 5: Solve for x
    x = 15,431,422,483.29/142,260.72
  6. Step 6: Final answer
    x = 108,472.83

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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.