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Finding the Fourth Proportional to 203,069, 280,196.32 and 131,439.08

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Solution

The fourth proportional to 203,069, 280,196.32 and 131,439.08 is: 181,360.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,069 : 280,196.32 = 131,439.08 : x
  2. Step 2: Convert to fraction form
    203,069/280,196.32 = 131,439.08/x
  3. Step 3: Cross multiply
    203,069x = 280,196.32 × 131,439.08
  4. Step 4: Simplify right side
    203,069x = 36,828,746,520.19
  5. Step 5: Solve for x
    x = 36,828,746,520.19/203,069
  6. Step 6: Final answer
    x = 181,360.75

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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.