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Finding the Fourth Proportional to 118,630, 177,986.01 and 74,203.84

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Solution

The fourth proportional to 118,630, 177,986.01 and 74,203.84 is: 111,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,630 : 177,986.01 = 74,203.84 : x
  2. Step 2: Convert to fraction form
    118,630/177,986.01 = 74,203.84/x
  3. Step 3: Cross multiply
    118,630x = 177,986.01 × 74,203.84
  4. Step 4: Simplify right side
    118,630x = 13,207,245,408.28
  5. Step 5: Solve for x
    x = 13,207,245,408.28/118,630
  6. Step 6: Final answer
    x = 111,331.41

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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.