Home / 142,516.23-196,673.76-78,855.36

Finding the Fourth Proportional to 142,516.23, 196,673.76 and 78,855.36

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Solution

The fourth proportional to 142,516.23, 196,673.76 and 78,855.36 is: 108,821.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,516.23 : 196,673.76 = 78,855.36 : x
  2. Step 2: Convert to fraction form
    142,516.23/196,673.76 = 78,855.36/x
  3. Step 3: Cross multiply
    142,516.23x = 196,673.76 × 78,855.36
  4. Step 4: Simplify right side
    142,516.23x = 15,508,780,147.35
  5. Step 5: Solve for x
    x = 15,508,780,147.35/142,516.23
  6. Step 6: Final answer
    x = 108,821.15

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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.