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Finding the Fourth Proportional to 203,521.01, 280,845 and 112,868.46

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Solution

The fourth proportional to 203,521.01, 280,845 and 112,868.46 is: 155,750.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,521.01 : 280,845 = 112,868.46 : x
  2. Step 2: Convert to fraction form
    203,521.01/280,845 = 112,868.46/x
  3. Step 3: Cross multiply
    203,521.01x = 280,845 × 112,868.46
  4. Step 4: Simplify right side
    203,521.01x = 31,698,542,648.70
  5. Step 5: Solve for x
    x = 31,698,542,648.70/203,521.01
  6. Step 6: Final answer
    x = 155,750.72

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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.