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Finding the Fourth Proportional to 159,395.04, 219,956.63 and 91,408.73

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Solution

The fourth proportional to 159,395.04, 219,956.63 and 91,408.73 is: 126,139.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,395.04 : 219,956.63 = 91,408.73 : x
  2. Step 2: Convert to fraction form
    159,395.04/219,956.63 = 91,408.73/x
  3. Step 3: Cross multiply
    159,395.04x = 219,956.63 × 91,408.73
  4. Step 4: Simplify right side
    159,395.04x = 20,105,954,646.55
  5. Step 5: Solve for x
    x = 20,105,954,646.55/159,395.04
  6. Step 6: Final answer
    x = 126,139.15

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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.