Home / 127,085.21-190,629.20-38,339.49

Finding the Fourth Proportional to 127,085.21, 190,629.20 and 38,339.49

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Solution

The fourth proportional to 127,085.21, 190,629.20 and 38,339.49 is: 57,509.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,085.21 : 190,629.20 = 38,339.49 : x
  2. Step 2: Convert to fraction form
    127,085.21/190,629.20 = 38,339.49/x
  3. Step 3: Cross multiply
    127,085.21x = 190,629.20 × 38,339.49
  4. Step 4: Simplify right side
    127,085.21x = 7,308,626,115.41
  5. Step 5: Solve for x
    x = 7,308,626,115.41/127,085.21
  6. Step 6: Final answer
    x = 57,509.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.