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Finding the Fourth Proportional to 168,981.60, 253,485.60 and 75,496.80

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Solution

The fourth proportional to 168,981.60, 253,485.60 and 75,496.80 is: 113,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,981.60 : 253,485.60 = 75,496.80 : x
  2. Step 2: Convert to fraction form
    168,981.60/253,485.60 = 75,496.80/x
  3. Step 3: Cross multiply
    168,981.60x = 253,485.60 × 75,496.80
  4. Step 4: Simplify right side
    168,981.60x = 19,137,351,646.08
  5. Step 5: Solve for x
    x = 19,137,351,646.08/168,981.60
  6. Step 6: Final answer
    x = 113,251.10

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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.