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Finding the Fourth Proportional to 188,503.35, 260,128.02 and 103,619.80

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Solution

The fourth proportional to 188,503.35, 260,128.02 and 103,619.80 is: 142,991.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,503.35 : 260,128.02 = 103,619.80 : x
  2. Step 2: Convert to fraction form
    188,503.35/260,128.02 = 103,619.80/x
  3. Step 3: Cross multiply
    188,503.35x = 260,128.02 × 103,619.80
  4. Step 4: Simplify right side
    188,503.35x = 26,954,413,406.80
  5. Step 5: Solve for x
    x = 26,954,413,406.80/188,503.35
  6. Step 6: Final answer
    x = 142,991.69

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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.