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Finding the Fourth Proportional to 169,778.80, 254,376.60 and 80,840.80

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Solution

The fourth proportional to 169,778.80, 254,376.60 and 80,840.80 is: 121,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,778.80 : 254,376.60 = 80,840.80 : x
  2. Step 2: Convert to fraction form
    169,778.80/254,376.60 = 80,840.80/x
  3. Step 3: Cross multiply
    169,778.80x = 254,376.60 × 80,840.80
  4. Step 4: Simplify right side
    169,778.80x = 20,564,007,845.28
  5. Step 5: Solve for x
    x = 20,564,007,845.28/169,778.80
  6. Step 6: Final answer
    x = 121,122.35

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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.