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Finding the Fourth Proportional to 113,004.60, 169,701.30 and 79,956.60

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Solution

The fourth proportional to 113,004.60, 169,701.30 and 79,956.60 is: 120,072.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,004.60 : 169,701.30 = 79,956.60 : x
  2. Step 2: Convert to fraction form
    113,004.60/169,701.30 = 79,956.60/x
  3. Step 3: Cross multiply
    113,004.60x = 169,701.30 × 79,956.60
  4. Step 4: Simplify right side
    113,004.60x = 13,568,738,963.58
  5. Step 5: Solve for x
    x = 13,568,738,963.58/113,004.60
  6. Step 6: Final answer
    x = 120,072.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.