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Finding the Fourth Proportional to 203,537.79, 280,891.07 and 112,887.66

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Solution

The fourth proportional to 203,537.79, 280,891.07 and 112,887.66 is: 155,789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,537.79 : 280,891.07 = 112,887.66 : x
  2. Step 2: Convert to fraction form
    203,537.79/280,891.07 = 112,887.66/x
  3. Step 3: Cross multiply
    203,537.79x = 280,891.07 × 112,887.66
  4. Step 4: Simplify right side
    203,537.79x = 31,709,133,638.30
  5. Step 5: Solve for x
    x = 31,709,133,638.30/203,537.79
  6. Step 6: Final answer
    x = 155,789.91

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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.