Home / 128,427.53-177,279.66-114,975.41

Finding the Fourth Proportional to 128,427.53, 177,279.66 and 114,975.41

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Solution

The fourth proportional to 128,427.53, 177,279.66 and 114,975.41 is: 158,710.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,427.53 : 177,279.66 = 114,975.41 : x
  2. Step 2: Convert to fraction form
    128,427.53/177,279.66 = 114,975.41/x
  3. Step 3: Cross multiply
    128,427.53x = 177,279.66 × 114,975.41
  4. Step 4: Simplify right side
    128,427.53x = 20,382,800,706.76
  5. Step 5: Solve for x
    x = 20,382,800,706.76/128,427.53
  6. Step 6: Final answer
    x = 158,710.53

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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.