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Finding the Fourth Proportional to 119,697.30, 165,174.85 and 65,979.54

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Solution

The fourth proportional to 119,697.30, 165,174.85 and 65,979.54 is: 91,047.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,697.30 : 165,174.85 = 65,979.54 : x
  2. Step 2: Convert to fraction form
    119,697.30/165,174.85 = 65,979.54/x
  3. Step 3: Cross multiply
    119,697.30x = 165,174.85 × 65,979.54
  4. Step 4: Simplify right side
    119,697.30x = 10,898,160,622.57
  5. Step 5: Solve for x
    x = 10,898,160,622.57/119,697.30
  6. Step 6: Final answer
    x = 91,047.67

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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.