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Finding the Fourth Proportional to 192,071.05, 288,098.07 and 65,722.39

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Solution

The fourth proportional to 192,071.05, 288,098.07 and 65,722.39 is: 98,580.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,071.05 : 288,098.07 = 65,722.39 : x
  2. Step 2: Convert to fraction form
    192,071.05/288,098.07 = 65,722.39/x
  3. Step 3: Cross multiply
    192,071.05x = 288,098.07 × 65,722.39
  4. Step 4: Simplify right side
    192,071.05x = 18,934,493,714.79
  5. Step 5: Solve for x
    x = 18,934,493,714.79/192,071.05
  6. Step 6: Final answer
    x = 98,580.67

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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.