Home / 203,623.86-305,313.06-91,283.74

Finding the Fourth Proportional to 203,623.86, 305,313.06 and 91,283.74

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Solution

The fourth proportional to 203,623.86, 305,313.06 and 91,283.74 is: 136,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,623.86 : 305,313.06 = 91,283.74 : x
  2. Step 2: Convert to fraction form
    203,623.86/305,313.06 = 91,283.74/x
  3. Step 3: Cross multiply
    203,623.86x = 305,313.06 × 91,283.74
  4. Step 4: Simplify right side
    203,623.86x = 27,870,117,987.64
  5. Step 5: Solve for x
    x = 27,870,117,987.64/203,623.86
  6. Step 6: Final answer
    x = 136,870.59

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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.