Home / 203,856.12-281,330.80-113,212.50

Finding the Fourth Proportional to 203,856.12, 281,330.80 and 113,212.50

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Solution

The fourth proportional to 203,856.12, 281,330.80 and 113,212.50 is: 156,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,856.12 : 281,330.80 = 113,212.50 : x
  2. Step 2: Convert to fraction form
    203,856.12/281,330.80 = 113,212.50/x
  3. Step 3: Cross multiply
    203,856.12x = 281,330.80 × 113,212.50
  4. Step 4: Simplify right side
    203,856.12x = 31,850,163,195
  5. Step 5: Solve for x
    x = 31,850,163,195/203,856.12
  6. Step 6: Final answer
    x = 156,238.45

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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.