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Finding the Fourth Proportional to 203,168.60, 280,374.72 and 122,580.54

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Solution

The fourth proportional to 203,168.60, 280,374.72 and 122,580.54 is: 169,162.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,168.60 : 280,374.72 = 122,580.54 : x
  2. Step 2: Convert to fraction form
    203,168.60/280,374.72 = 122,580.54/x
  3. Step 3: Cross multiply
    203,168.60x = 280,374.72 × 122,580.54
  4. Step 4: Simplify right side
    203,168.60x = 34,368,484,579.95
  5. Step 5: Solve for x
    x = 34,368,484,579.95/203,168.60
  6. Step 6: Final answer
    x = 169,162.39

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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.