Home / 235,780.74-325,377.44-128,351.56

Finding the Fourth Proportional to 235,780.74, 325,377.44 and 128,351.56

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Solution

The fourth proportional to 235,780.74, 325,377.44 and 128,351.56 is: 177,125.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,780.74 : 325,377.44 = 128,351.56 : x
  2. Step 2: Convert to fraction form
    235,780.74/325,377.44 = 128,351.56/x
  3. Step 3: Cross multiply
    235,780.74x = 325,377.44 × 128,351.56
  4. Step 4: Simplify right side
    235,780.74x = 41,762,702,012.81
  5. Step 5: Solve for x
    x = 41,762,702,012.81/235,780.74
  6. Step 6: Final answer
    x = 177,125.16

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1.5x scale

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.