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Finding the Fourth Proportional to 188,505.22, 260,130.60 and 103,621.68

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Solution

The fourth proportional to 188,505.22, 260,130.60 and 103,621.68 is: 142,994.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,505.22 : 260,130.60 = 103,621.68 : x
  2. Step 2: Convert to fraction form
    188,505.22/260,130.60 = 103,621.68/x
  3. Step 3: Cross multiply
    188,505.22x = 260,130.60 × 103,621.68
  4. Step 4: Simplify right side
    188,505.22x = 26,955,169,791.41
  5. Step 5: Solve for x
    x = 26,955,169,791.41/188,505.22
  6. Step 6: Final answer
    x = 142,994.29

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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.