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Finding the Fourth Proportional to 188,416.19, 260,015.30 and 102,375.39

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Solution

The fourth proportional to 188,416.19, 260,015.30 and 102,375.39 is: 141,278.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,416.19 : 260,015.30 = 102,375.39 : x
  2. Step 2: Convert to fraction form
    188,416.19/260,015.30 = 102,375.39/x
  3. Step 3: Cross multiply
    188,416.19x = 260,015.30 × 102,375.39
  4. Step 4: Simplify right side
    188,416.19x = 26,619,167,999.41
  5. Step 5: Solve for x
    x = 26,619,167,999.41/188,416.19
  6. Step 6: Final answer
    x = 141,278.56

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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.