Home / 127,180.20-190,856.70-71,020.20

Finding the Fourth Proportional to 127,180.20, 190,856.70 and 71,020.20

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Solution

The fourth proportional to 127,180.20, 190,856.70 and 71,020.20 is: 106,578.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,180.20 : 190,856.70 = 71,020.20 : x
  2. Step 2: Convert to fraction form
    127,180.20/190,856.70 = 71,020.20/x
  3. Step 3: Cross multiply
    127,180.20x = 190,856.70 × 71,020.20
  4. Step 4: Simplify right side
    127,180.20x = 13,554,681,005.34
  5. Step 5: Solve for x
    x = 13,554,681,005.34/127,180.20
  6. Step 6: Final answer
    x = 106,578.55

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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.