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Finding the Fourth Proportional to 188,649.09, 260,330.31 and 103,766.16

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Solution

The fourth proportional to 188,649.09, 260,330.31 and 103,766.16 is: 143,194.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,649.09 : 260,330.31 = 103,766.16 : x
  2. Step 2: Convert to fraction form
    188,649.09/260,330.31 = 103,766.16/x
  3. Step 3: Cross multiply
    188,649.09x = 260,330.31 × 103,766.16
  4. Step 4: Simplify right side
    188,649.09x = 27,013,476,600.31
  5. Step 5: Solve for x
    x = 27,013,476,600.31/188,649.09
  6. Step 6: Final answer
    x = 143,194.31

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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.