Home / 127,439.07-190,896.12-74,721.44

Finding the Fourth Proportional to 127,439.07, 190,896.12 and 74,721.44

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Solution

The fourth proportional to 127,439.07, 190,896.12 and 74,721.44 is: 111,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,439.07 : 190,896.12 = 74,721.44 : x
  2. Step 2: Convert to fraction form
    127,439.07/190,896.12 = 74,721.44/x
  3. Step 3: Cross multiply
    127,439.07x = 190,896.12 × 74,721.44
  4. Step 4: Simplify right side
    127,439.07x = 14,264,032,022.33
  5. Step 5: Solve for x
    x = 14,264,032,022.33/127,439.07
  6. Step 6: Final answer
    x = 111,928.25

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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.