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Finding the Fourth Proportional to 188,422.79, 260,020.44 and 103,538.03

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Solution

The fourth proportional to 188,422.79, 260,020.44 and 103,538.03 is: 142,880.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,422.79 : 260,020.44 = 103,538.03 : x
  2. Step 2: Convert to fraction form
    188,422.79/260,020.44 = 103,538.03/x
  3. Step 3: Cross multiply
    188,422.79x = 260,020.44 × 103,538.03
  4. Step 4: Simplify right side
    188,422.79x = 26,922,002,817.23
  5. Step 5: Solve for x
    x = 26,922,002,817.23/188,422.79
  6. Step 6: Final answer
    x = 142,880.82

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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.