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Finding the Fourth Proportional to 118,523.60, 177,785.40 and 105,621.20

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Solution

The fourth proportional to 118,523.60, 177,785.40 and 105,621.20 is: 158,431.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,523.60 : 177,785.40 = 105,621.20 : x
  2. Step 2: Convert to fraction form
    118,523.60/177,785.40 = 105,621.20/x
  3. Step 3: Cross multiply
    118,523.60x = 177,785.40 × 105,621.20
  4. Step 4: Simplify right side
    118,523.60x = 18,777,907,290.48
  5. Step 5: Solve for x
    x = 18,777,907,290.48/118,523.60
  6. Step 6: Final answer
    x = 158,431.80

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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.