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Finding the Fourth Proportional to 173,405.40, 259,935.30 and 79,747.80

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Solution

The fourth proportional to 173,405.40, 259,935.30 and 79,747.80 is: 119,542.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,405.40 : 259,935.30 = 79,747.80 : x
  2. Step 2: Convert to fraction form
    173,405.40/259,935.30 = 79,747.80/x
  3. Step 3: Cross multiply
    173,405.40x = 259,935.30 × 79,747.80
  4. Step 4: Simplify right side
    173,405.40x = 20,729,268,317.34
  5. Step 5: Solve for x
    x = 20,729,268,317.34/173,405.40
  6. Step 6: Final answer
    x = 119,542.23

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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.