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Finding the Fourth Proportional to 203,503.34, 280,834.62 and 112,873.18

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Solution

The fourth proportional to 203,503.34, 280,834.62 and 112,873.18 is: 155,764.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,503.34 : 280,834.62 = 112,873.18 : x
  2. Step 2: Convert to fraction form
    203,503.34/280,834.62 = 112,873.18/x
  3. Step 3: Cross multiply
    203,503.34x = 280,834.62 × 112,873.18
  4. Step 4: Simplify right side
    203,503.34x = 31,698,696,613.49
  5. Step 5: Solve for x
    x = 31,698,696,613.49/203,503.34
  6. Step 6: Final answer
    x = 155,764.99

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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.