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Finding the Fourth Proportional to 120,021, 179,991.92 and 40,036.92

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Solution

The fourth proportional to 120,021, 179,991.92 and 40,036.92 is: 60,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,021 : 179,991.92 = 40,036.92 : x
  2. Step 2: Convert to fraction form
    120,021/179,991.92 = 40,036.92/x
  3. Step 3: Cross multiply
    120,021x = 179,991.92 × 40,036.92
  4. Step 4: Simplify right side
    120,021x = 7,206,321,901.50
  5. Step 5: Solve for x
    x = 7,206,321,901.50/120,021
  6. Step 6: Final answer
    x = 60,042.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.