Home / 127,128.02-190,720.38-41,742.68

Finding the Fourth Proportional to 127,128.02, 190,720.38 and 41,742.68

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Solution

The fourth proportional to 127,128.02, 190,720.38 and 41,742.68 is: 62,623.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,128.02 : 190,720.38 = 41,742.68 : x
  2. Step 2: Convert to fraction form
    127,128.02/190,720.38 = 41,742.68/x
  3. Step 3: Cross multiply
    127,128.02x = 190,720.38 × 41,742.68
  4. Step 4: Simplify right side
    127,128.02x = 7,961,179,791.82
  5. Step 5: Solve for x
    x = 7,961,179,791.82/127,128.02
  6. Step 6: Final answer
    x = 62,623.33

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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.