Home / 130,942.36-196,499.67-71,819.50

Finding the Fourth Proportional to 130,942.36, 196,499.67 and 71,819.50

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Solution

The fourth proportional to 130,942.36, 196,499.67 and 71,819.50 is: 107,776.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,942.36 : 196,499.67 = 71,819.50 : x
  2. Step 2: Convert to fraction form
    130,942.36/196,499.67 = 71,819.50/x
  3. Step 3: Cross multiply
    130,942.36x = 196,499.67 × 71,819.50
  4. Step 4: Simplify right side
    130,942.36x = 14,112,508,049.57
  5. Step 5: Solve for x
    x = 14,112,508,049.57/130,942.36
  6. Step 6: Final answer
    x = 107,776.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.