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Finding the Fourth Proportional to 154,397, 213,073.62 and 87,327.56

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Solution

The fourth proportional to 154,397, 213,073.62 and 87,327.56 is: 120,515.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,397 : 213,073.62 = 87,327.56 : x
  2. Step 2: Convert to fraction form
    154,397/213,073.62 = 87,327.56/x
  3. Step 3: Cross multiply
    154,397x = 213,073.62 × 87,327.56
  4. Step 4: Simplify right side
    154,397x = 18,607,199,334.97
  5. Step 5: Solve for x
    x = 18,607,199,334.97/154,397
  6. Step 6: Final answer
    x = 120,515.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.