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Finding the Fourth Proportional to 188,556.27, 260,208.63 and 103,678.80

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Solution

The fourth proportional to 188,556.27, 260,208.63 and 103,678.80 is: 143,077.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,556.27 : 260,208.63 = 103,678.80 : x
  2. Step 2: Convert to fraction form
    188,556.27/260,208.63 = 103,678.80/x
  3. Step 3: Cross multiply
    188,556.27x = 260,208.63 × 103,678.80
  4. Step 4: Simplify right side
    188,556.27x = 26,978,118,508.04
  5. Step 5: Solve for x
    x = 26,978,118,508.04/188,556.27
  6. Step 6: Final answer
    x = 143,077.28

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1.5x scale

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.