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Finding the Fourth Proportional to 188,485.23, 260,170.23 and 120,684.81

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Solution

The fourth proportional to 188,485.23, 260,170.23 and 120,684.81 is: 166,583.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,485.23 : 260,170.23 = 120,684.81 : x
  2. Step 2: Convert to fraction form
    188,485.23/260,170.23 = 120,684.81/x
  3. Step 3: Cross multiply
    188,485.23x = 260,170.23 × 120,684.81
  4. Step 4: Simplify right side
    188,485.23x = 31,398,593,474.36
  5. Step 5: Solve for x
    x = 31,398,593,474.36/188,485.23
  6. Step 6: Final answer
    x = 166,583.84

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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.