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Finding the Fourth Proportional to 118,420.20, 177,630.30 and 102,522.60

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Solution

The fourth proportional to 118,420.20, 177,630.30 and 102,522.60 is: 153,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,420.20 : 177,630.30 = 102,522.60 : x
  2. Step 2: Convert to fraction form
    118,420.20/177,630.30 = 102,522.60/x
  3. Step 3: Cross multiply
    118,420.20x = 177,630.30 × 102,522.60
  4. Step 4: Simplify right side
    118,420.20x = 18,211,120,194.78
  5. Step 5: Solve for x
    x = 18,211,120,194.78/118,420.20
  6. Step 6: Final answer
    x = 153,783.90

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1.5x scale

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.