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Finding the Fourth Proportional to 188,378.28, 259,953.17 and 103,493.52

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Solution

The fourth proportional to 188,378.28, 259,953.17 and 103,493.52 is: 142,816.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,378.28 : 259,953.17 = 103,493.52 : x
  2. Step 2: Convert to fraction form
    188,378.28/259,953.17 = 103,493.52/x
  3. Step 3: Cross multiply
    188,378.28x = 259,953.17 × 103,493.52
  4. Step 4: Simplify right side
    188,378.28x = 26,903,468,080.99
  5. Step 5: Solve for x
    x = 26,903,468,080.99/188,378.28
  6. Step 6: Final answer
    x = 142,816.19

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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.