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Finding the Fourth Proportional to 158,361.26, 218,455.72 and 97,912.58

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Solution

The fourth proportional to 158,361.26, 218,455.72 and 97,912.58 is: 135,068.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,361.26 : 218,455.72 = 97,912.58 : x
  2. Step 2: Convert to fraction form
    158,361.26/218,455.72 = 97,912.58/x
  3. Step 3: Cross multiply
    158,361.26x = 218,455.72 × 97,912.58
  4. Step 4: Simplify right side
    158,361.26x = 21,389,561,823.90
  5. Step 5: Solve for x
    x = 21,389,561,823.90/158,361.26
  6. Step 6: Final answer
    x = 135,068.15

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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.