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Finding the Fourth Proportional to 119,811, 165,339.18 and 66,819

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Solution

The fourth proportional to 119,811, 165,339.18 and 66,819 is: 92,210.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,811 : 165,339.18 = 66,819 : x
  2. Step 2: Convert to fraction form
    119,811/165,339.18 = 66,819/x
  3. Step 3: Cross multiply
    119,811x = 165,339.18 × 66,819
  4. Step 4: Simplify right side
    119,811x = 11,047,798,668.42
  5. Step 5: Solve for x
    x = 11,047,798,668.42/119,811
  6. Step 6: Final answer
    x = 92,210.22

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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.