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Finding the Fourth Proportional to 203,630.76, 280,997.64 and 123,010.56

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Solution

The fourth proportional to 203,630.76, 280,997.64 and 123,010.56 is: 169,746.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,630.76 : 280,997.64 = 123,010.56 : x
  2. Step 2: Convert to fraction form
    203,630.76/280,997.64 = 123,010.56/x
  3. Step 3: Cross multiply
    203,630.76x = 280,997.64 × 123,010.56
  4. Step 4: Simplify right side
    203,630.76x = 34,565,677,055.08
  5. Step 5: Solve for x
    x = 34,565,677,055.08/203,630.76
  6. Step 6: Final answer
    x = 169,746.84

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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.