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Finding the Fourth Proportional to 203,510.54, 280,861.81 and 112,895.71

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Solution

The fourth proportional to 203,510.54, 280,861.81 and 112,895.71 is: 155,805.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,510.54 : 280,861.81 = 112,895.71 : x
  2. Step 2: Convert to fraction form
    203,510.54/280,861.81 = 112,895.71/x
  3. Step 3: Cross multiply
    203,510.54x = 280,861.81 × 112,895.71
  4. Step 4: Simplify right side
    203,510.54x = 31,708,092,467.44
  5. Step 5: Solve for x
    x = 31,708,092,467.44/203,510.54
  6. Step 6: Final answer
    x = 155,805.65

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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.