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Finding the Fourth Proportional to 203,533.61, 280,893.69 and 112,918.77

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Solution

The fourth proportional to 203,533.61, 280,893.69 and 112,918.77 is: 155,837.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,533.61 : 280,893.69 = 112,918.77 : x
  2. Step 2: Convert to fraction form
    203,533.61/280,893.69 = 112,918.77/x
  3. Step 3: Cross multiply
    203,533.61x = 280,893.69 × 112,918.77
  4. Step 4: Simplify right side
    203,533.61x = 31,718,169,975.56
  5. Step 5: Solve for x
    x = 31,718,169,975.56/203,533.61
  6. Step 6: Final answer
    x = 155,837.51

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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.