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Finding the Fourth Proportional to 188,531.33, 260,175 and 103,649

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Solution

The fourth proportional to 188,531.33, 260,175 and 103,649 is: 143,036.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,531.33 : 260,175 = 103,649 : x
  2. Step 2: Convert to fraction form
    188,531.33/260,175 = 103,649/x
  3. Step 3: Cross multiply
    188,531.33x = 260,175 × 103,649
  4. Step 4: Simplify right side
    188,531.33x = 26,966,878,575
  5. Step 5: Solve for x
    x = 26,966,878,575/188,531.33
  6. Step 6: Final answer
    x = 143,036.59

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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.