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Finding the Fourth Proportional to 119,811, 165,339.90 and 66,097.92

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Solution

The fourth proportional to 119,811, 165,339.90 and 66,097.92 is: 91,215.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,811 : 165,339.90 = 66,097.92 : x
  2. Step 2: Convert to fraction form
    119,811/165,339.90 = 66,097.92/x
  3. Step 3: Cross multiply
    119,811x = 165,339.90 × 66,097.92
  4. Step 4: Simplify right side
    119,811x = 10,928,623,483.01
  5. Step 5: Solve for x
    x = 10,928,623,483.01/119,811
  6. Step 6: Final answer
    x = 91,215.53

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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.