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Finding the Fourth Proportional to 158,360.88, 218,455.20 and 97,912.20

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Solution

The fourth proportional to 158,360.88, 218,455.20 and 97,912.20 is: 135,067.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,360.88 : 218,455.20 = 97,912.20 : x
  2. Step 2: Convert to fraction form
    158,360.88/218,455.20 = 97,912.20/x
  3. Step 3: Cross multiply
    158,360.88x = 218,455.20 × 97,912.20
  4. Step 4: Simplify right side
    158,360.88x = 21,389,429,233.44
  5. Step 5: Solve for x
    x = 21,389,429,233.44/158,360.88
  6. Step 6: Final answer
    x = 135,067.63

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1.5x scale

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.