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Finding the Fourth Proportional to 155,344.93, 214,373.96 and 87,361.88

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Solution

The fourth proportional to 155,344.93, 214,373.96 and 87,361.88 is: 120,558.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,344.93 : 214,373.96 = 87,361.88 : x
  2. Step 2: Convert to fraction form
    155,344.93/214,373.96 = 87,361.88/x
  3. Step 3: Cross multiply
    155,344.93x = 214,373.96 × 87,361.88
  4. Step 4: Simplify right side
    155,344.93x = 18,728,112,168.64
  5. Step 5: Solve for x
    x = 18,728,112,168.64/155,344.93
  6. Step 6: Final answer
    x = 120,558.25

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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.