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Finding the Fourth Proportional to 203,093.08, 280,278.80 and 112,459.08

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Solution

The fourth proportional to 203,093.08, 280,278.80 and 112,459.08 is: 155,199.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,093.08 : 280,278.80 = 112,459.08 : x
  2. Step 2: Convert to fraction form
    203,093.08/280,278.80 = 112,459.08/x
  3. Step 3: Cross multiply
    203,093.08x = 280,278.80 × 112,459.08
  4. Step 4: Simplify right side
    203,093.08x = 31,519,895,991.50
  5. Step 5: Solve for x
    x = 31,519,895,991.50/203,093.08
  6. Step 6: Final answer
    x = 155,199.26

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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.