Home / 189,769.24-261,881.32-103,728.79

Finding the Fourth Proportional to 189,769.24, 261,881.32 and 103,728.79

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Solution

The fourth proportional to 189,769.24, 261,881.32 and 103,728.79 is: 143,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,769.24 : 261,881.32 = 103,728.79 : x
  2. Step 2: Convert to fraction form
    189,769.24/261,881.32 = 103,728.79/x
  3. Step 3: Cross multiply
    189,769.24x = 261,881.32 × 103,728.79
  4. Step 4: Simplify right side
    189,769.24x = 27,164,630,619.15
  5. Step 5: Solve for x
    x = 27,164,630,619.15/189,769.24
  6. Step 6: Final answer
    x = 143,145.60

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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.