Home / 235,788.20-325,377.76-128,356

Finding the Fourth Proportional to 235,788.20, 325,377.76 and 128,356

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Solution

The fourth proportional to 235,788.20, 325,377.76 and 128,356 is: 177,125.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,788.20 : 325,377.76 = 128,356 : x
  2. Step 2: Convert to fraction form
    235,788.20/325,377.76 = 128,356/x
  3. Step 3: Cross multiply
    235,788.20x = 325,377.76 × 128,356
  4. Step 4: Simplify right side
    235,788.20x = 41,764,187,762.56
  5. Step 5: Solve for x
    x = 41,764,187,762.56/235,788.20
  6. Step 6: Final answer
    x = 177,125.86

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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.