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Finding the Fourth Proportional to 121,620.26, 182,426.40 and 55,060.40

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Solution

The fourth proportional to 121,620.26, 182,426.40 and 55,060.40 is: 82,588.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,620.26 : 182,426.40 = 55,060.40 : x
  2. Step 2: Convert to fraction form
    121,620.26/182,426.40 = 55,060.40/x
  3. Step 3: Cross multiply
    121,620.26x = 182,426.40 × 55,060.40
  4. Step 4: Simplify right side
    121,620.26x = 10,044,470,554.56
  5. Step 5: Solve for x
    x = 10,044,470,554.56/121,620.26
  6. Step 6: Final answer
    x = 82,588.79

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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.