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Finding the Fourth Proportional to 188,530.36, 260,173.59 and 102,489.51

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Solution

The fourth proportional to 188,530.36, 260,173.59 and 102,489.51 is: 141,436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,530.36 : 260,173.59 = 102,489.51 : x
  2. Step 2: Convert to fraction form
    188,530.36/260,173.59 = 102,489.51/x
  3. Step 3: Cross multiply
    188,530.36x = 260,173.59 × 102,489.51
  4. Step 4: Simplify right side
    188,530.36x = 26,665,063,754.04
  5. Step 5: Solve for x
    x = 26,665,063,754.04/188,530.36
  6. Step 6: Final answer
    x = 141,436.44

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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.