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Finding the Fourth Proportional to 121,684.58, 182,621.02 and 79,553.24

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Solution

The fourth proportional to 121,684.58, 182,621.02 and 79,553.24 is: 119,391.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,684.58 : 182,621.02 = 79,553.24 : x
  2. Step 2: Convert to fraction form
    121,684.58/182,621.02 = 79,553.24/x
  3. Step 3: Cross multiply
    121,684.58x = 182,621.02 × 79,553.24
  4. Step 4: Simplify right side
    121,684.58x = 14,528,092,920.00
  5. Step 5: Solve for x
    x = 14,528,092,920.00/121,684.58
  6. Step 6: Final answer
    x = 119,391.41

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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.