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Finding the Fourth Proportional to 118,713.60, 178,070.40 and 113,464.80

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Solution

The fourth proportional to 118,713.60, 178,070.40 and 113,464.80 is: 170,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,713.60 : 178,070.40 = 113,464.80 : x
  2. Step 2: Convert to fraction form
    118,713.60/178,070.40 = 113,464.80/x
  3. Step 3: Cross multiply
    118,713.60x = 178,070.40 × 113,464.80
  4. Step 4: Simplify right side
    118,713.60x = 20,204,722,321.92
  5. Step 5: Solve for x
    x = 20,204,722,321.92/118,713.60
  6. Step 6: Final answer
    x = 170,197.20

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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.