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Finding the Fourth Proportional to 113,279.80, 169,919.70 and 102,004.60

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Solution

The fourth proportional to 113,279.80, 169,919.70 and 102,004.60 is: 153,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,279.80 : 169,919.70 = 102,004.60 : x
  2. Step 2: Convert to fraction form
    113,279.80/169,919.70 = 102,004.60/x
  3. Step 3: Cross multiply
    113,279.80x = 169,919.70 × 102,004.60
  4. Step 4: Simplify right side
    113,279.80x = 17,332,591,030.62
  5. Step 5: Solve for x
    x = 17,332,591,030.62/113,279.80
  6. Step 6: Final answer
    x = 153,006.90

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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.