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Finding the Fourth Proportional to 119,998.70, 165,608.44 and 66,289.58

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Solution

The fourth proportional to 119,998.70, 165,608.44 and 66,289.58 is: 91,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,998.70 : 165,608.44 = 66,289.58 : x
  2. Step 2: Convert to fraction form
    119,998.70/165,608.44 = 66,289.58/x
  3. Step 3: Cross multiply
    119,998.70x = 165,608.44 × 66,289.58
  4. Step 4: Simplify right side
    119,998.70x = 10,978,113,932.06
  5. Step 5: Solve for x
    x = 10,978,113,932.06/119,998.70
  6. Step 6: Final answer
    x = 91,485.27

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1.5x scale

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.