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Finding the Fourth Proportional to 188,517, 260,154 and 103,634.67

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Solution

The fourth proportional to 188,517, 260,154 and 103,634.67 is: 143,016.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,517 : 260,154 = 103,634.67 : x
  2. Step 2: Convert to fraction form
    188,517/260,154 = 103,634.67/x
  3. Step 3: Cross multiply
    188,517x = 260,154 × 103,634.67
  4. Step 4: Simplify right side
    188,517x = 26,960,973,939.18
  5. Step 5: Solve for x
    x = 26,960,973,939.18/188,517
  6. Step 6: Final answer
    x = 143,016.14

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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.