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Finding the Fourth Proportional to 120,004.33, 165,599.11 and 71,660.81

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Solution

The fourth proportional to 120,004.33, 165,599.11 and 71,660.81 is: 98,887.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,004.33 : 165,599.11 = 71,660.81 : x
  2. Step 2: Convert to fraction form
    120,004.33/165,599.11 = 71,660.81/x
  3. Step 3: Cross multiply
    120,004.33x = 165,599.11 × 71,660.81
  4. Step 4: Simplify right side
    120,004.33x = 11,866,966,357.88
  5. Step 5: Solve for x
    x = 11,866,966,357.88/120,004.33
  6. Step 6: Final answer
    x = 98,887.82

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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.