Home / 127,050.36-190,321.42-76,421.43

Finding the Fourth Proportional to 127,050.36, 190,321.42 and 76,421.43

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Solution

The fourth proportional to 127,050.36, 190,321.42 and 76,421.43 is: 114,479.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,050.36 : 190,321.42 = 76,421.43 : x
  2. Step 2: Convert to fraction form
    127,050.36/190,321.42 = 76,421.43/x
  3. Step 3: Cross multiply
    127,050.36x = 190,321.42 × 76,421.43
  4. Step 4: Simplify right side
    127,050.36x = 14,544,635,076.03
  5. Step 5: Solve for x
    x = 14,544,635,076.03/127,050.36
  6. Step 6: Final answer
    x = 114,479.29

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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.