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Finding the Fourth Proportional to 188,452, 260,063.76 and 103,574.53

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Solution

The fourth proportional to 188,452, 260,063.76 and 103,574.53 is: 142,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,452 : 260,063.76 = 103,574.53 : x
  2. Step 2: Convert to fraction form
    188,452/260,063.76 = 103,574.53/x
  3. Step 3: Cross multiply
    188,452x = 260,063.76 × 103,574.53
  4. Step 4: Simplify right side
    188,452x = 26,935,981,712.03
  5. Step 5: Solve for x
    x = 26,935,981,712.03/188,452
  6. Step 6: Final answer
    x = 142,932.85

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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.