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Finding the Fourth Proportional to 136,634.55, 203,593.55 and 121,728.93

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Solution

The fourth proportional to 136,634.55, 203,593.55 and 121,728.93 is: 181,383.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,634.55 : 203,593.55 = 121,728.93 : x
  2. Step 2: Convert to fraction form
    136,634.55/203,593.55 = 121,728.93/x
  3. Step 3: Cross multiply
    136,634.55x = 203,593.55 × 121,728.93
  4. Step 4: Simplify right side
    136,634.55x = 24,783,224,996.40
  5. Step 5: Solve for x
    x = 24,783,224,996.40/136,634.55
  6. Step 6: Final answer
    x = 181,383.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.