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Finding the Fourth Proportional to 101,512.60, 151,940.85 and 79,205.20

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Solution

The fourth proportional to 101,512.60, 151,940.85 and 79,205.20 is: 118,551.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,512.60 : 151,940.85 = 79,205.20 : x
  2. Step 2: Convert to fraction form
    101,512.60/151,940.85 = 79,205.20/x
  3. Step 3: Cross multiply
    101,512.60x = 151,940.85 × 79,205.20
  4. Step 4: Simplify right side
    101,512.60x = 12,034,505,412.42
  5. Step 5: Solve for x
    x = 12,034,505,412.42/101,512.60
  6. Step 6: Final answer
    x = 118,551.84

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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.