Home / 127,921.78-176,511.25-76,922.26

Finding the Fourth Proportional to 127,921.78, 176,511.25 and 76,922.26

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Solution

The fourth proportional to 127,921.78, 176,511.25 and 76,922.26 is: 106,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,921.78 : 176,511.25 = 76,922.26 : x
  2. Step 2: Convert to fraction form
    127,921.78/176,511.25 = 76,922.26/x
  3. Step 3: Cross multiply
    127,921.78x = 176,511.25 × 76,922.26
  4. Step 4: Simplify right side
    127,921.78x = 13,577,643,920.30
  5. Step 5: Solve for x
    x = 13,577,643,920.30/127,921.78
  6. Step 6: Final answer
    x = 106,140.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.