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Finding the Fourth Proportional to 188,911.04, 260,705.28 and 108,361.28

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Solution

The fourth proportional to 188,911.04, 260,705.28 and 108,361.28 is: 149,543.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,911.04 : 260,705.28 = 108,361.28 : x
  2. Step 2: Convert to fraction form
    188,911.04/260,705.28 = 108,361.28/x
  3. Step 3: Cross multiply
    188,911.04x = 260,705.28 × 108,361.28
  4. Step 4: Simplify right side
    188,911.04x = 28,250,357,843.56
  5. Step 5: Solve for x
    x = 28,250,357,843.56/188,911.04
  6. Step 6: Final answer
    x = 149,543.18

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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.