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Finding the Fourth Proportional to 123,122.56, 169,910.64 and 69,407.60

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Solution

The fourth proportional to 123,122.56, 169,910.64 and 69,407.60 is: 95,783.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,122.56 : 169,910.64 = 69,407.60 : x
  2. Step 2: Convert to fraction form
    123,122.56/169,910.64 = 69,407.60/x
  3. Step 3: Cross multiply
    123,122.56x = 169,910.64 × 69,407.60
  4. Step 4: Simplify right side
    123,122.56x = 11,793,089,736.86
  5. Step 5: Solve for x
    x = 11,793,089,736.86/123,122.56
  6. Step 6: Final answer
    x = 95,783.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.