Home / 142,266.45-196,331.66-78,608.35

Finding the Fourth Proportional to 142,266.45, 196,331.66 and 78,608.35

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Solution

The fourth proportional to 142,266.45, 196,331.66 and 78,608.35 is: 108,481.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,266.45 : 196,331.66 = 78,608.35 : x
  2. Step 2: Convert to fraction form
    142,266.45/196,331.66 = 78,608.35/x
  3. Step 3: Cross multiply
    142,266.45x = 196,331.66 × 78,608.35
  4. Step 4: Simplify right side
    142,266.45x = 15,433,307,845.36
  5. Step 5: Solve for x
    x = 15,433,307,845.36/142,266.45
  6. Step 6: Final answer
    x = 108,481.71

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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.