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Finding the Fourth Proportional to 118,993.80, 164,210.04 and 65,279.22

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Solution

The fourth proportional to 118,993.80, 164,210.04 and 65,279.22 is: 90,084.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,993.80 : 164,210.04 = 65,279.22 : x
  2. Step 2: Convert to fraction form
    118,993.80/164,210.04 = 65,279.22/x
  3. Step 3: Cross multiply
    118,993.80x = 164,210.04 × 65,279.22
  4. Step 4: Simplify right side
    118,993.80x = 10,719,503,327.37
  5. Step 5: Solve for x
    x = 10,719,503,327.37/118,993.80
  6. Step 6: Final answer
    x = 90,084.55

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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.