Home / 203,631.86-305,325.06-91,291.76

Finding the Fourth Proportional to 203,631.86, 305,325.06 and 91,291.76

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Solution

The fourth proportional to 203,631.86, 305,325.06 and 91,291.76 is: 136,882.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,631.86 : 305,325.06 = 91,291.76 : x
  2. Step 2: Convert to fraction form
    203,631.86/305,325.06 = 91,291.76/x
  3. Step 3: Cross multiply
    203,631.86x = 305,325.06 × 91,291.76
  4. Step 4: Simplify right side
    203,631.86x = 27,873,662,099.51
  5. Step 5: Solve for x
    x = 27,873,662,099.51/203,631.86
  6. Step 6: Final answer
    x = 136,882.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.