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Finding the Fourth Proportional to 203,021.93, 280,105.85 and 118,122.59

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Solution

The fourth proportional to 203,021.93, 280,105.85 and 118,122.59 is: 162,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,021.93 : 280,105.85 = 118,122.59 : x
  2. Step 2: Convert to fraction form
    203,021.93/280,105.85 = 118,122.59/x
  3. Step 3: Cross multiply
    203,021.93x = 280,105.85 × 118,122.59
  4. Step 4: Simplify right side
    203,021.93x = 33,086,828,476.15
  5. Step 5: Solve for x
    x = 33,086,828,476.15/203,021.93
  6. Step 6: Final answer
    x = 162,971.70

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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.