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Finding the Fourth Proportional to 155,361.29, 214,396.67 and 88,288.97

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Solution

The fourth proportional to 155,361.29, 214,396.67 and 88,288.97 is: 121,837.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,361.29 : 214,396.67 = 88,288.97 : x
  2. Step 2: Convert to fraction form
    155,361.29/214,396.67 = 88,288.97/x
  3. Step 3: Cross multiply
    155,361.29x = 214,396.67 × 88,288.97
  4. Step 4: Simplify right side
    155,361.29x = 18,928,860,314.47
  5. Step 5: Solve for x
    x = 18,928,860,314.47/155,361.29
  6. Step 6: Final answer
    x = 121,837.69

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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.