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Finding the Fourth Proportional to 117,739.40, 162,479.40 and 69,369.44

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Solution

The fourth proportional to 117,739.40, 162,479.40 and 69,369.44 is: 95,729.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,739.40 : 162,479.40 = 69,369.44 : x
  2. Step 2: Convert to fraction form
    117,739.40/162,479.40 = 69,369.44/x
  3. Step 3: Cross multiply
    117,739.40x = 162,479.40 × 69,369.44
  4. Step 4: Simplify right side
    117,739.40x = 11,271,104,989.54
  5. Step 5: Solve for x
    x = 11,271,104,989.54/117,739.40
  6. Step 6: Final answer
    x = 95,729.25

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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.