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Finding the Fourth Proportional to 203,033.76, 280,169.22 and 112,389.96

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Solution

The fourth proportional to 203,033.76, 280,169.22 and 112,389.96 is: 155,088.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,033.76 : 280,169.22 = 112,389.96 : x
  2. Step 2: Convert to fraction form
    203,033.76/280,169.22 = 112,389.96/x
  3. Step 3: Cross multiply
    203,033.76x = 280,169.22 × 112,389.96
  4. Step 4: Simplify right side
    203,033.76x = 31,488,207,429.03
  5. Step 5: Solve for x
    x = 31,488,207,429.03/203,033.76
  6. Step 6: Final answer
    x = 155,088.53

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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.