Home / 128,675.26-177,571.74-72,087.04

Finding the Fourth Proportional to 128,675.26, 177,571.74 and 72,087.04

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Solution

The fourth proportional to 128,675.26, 177,571.74 and 72,087.04 is: 99,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,675.26 : 177,571.74 = 72,087.04 : x
  2. Step 2: Convert to fraction form
    128,675.26/177,571.74 = 72,087.04/x
  3. Step 3: Cross multiply
    128,675.26x = 177,571.74 × 72,087.04
  4. Step 4: Simplify right side
    128,675.26x = 12,800,621,124.25
  5. Step 5: Solve for x
    x = 12,800,621,124.25/128,675.26
  6. Step 6: Final answer
    x = 99,480.05

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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.