Home / 235,680.35-325,245.72-128,257.31

Finding the Fourth Proportional to 235,680.35, 325,245.72 and 128,257.31

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Solution

The fourth proportional to 235,680.35, 325,245.72 and 128,257.31 is: 176,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,680.35 : 325,245.72 = 128,257.31 : x
  2. Step 2: Convert to fraction form
    235,680.35/325,245.72 = 128,257.31/x
  3. Step 3: Cross multiply
    235,680.35x = 325,245.72 × 128,257.31
  4. Step 4: Simplify right side
    235,680.35x = 41,715,141,136.21
  5. Step 5: Solve for x
    x = 41,715,141,136.21/235,680.35
  6. Step 6: Final answer
    x = 176,998.81

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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.