Home / 118,968.12-164,204.75-80,791.40

Finding the Fourth Proportional to 118,968.12, 164,204.75 and 80,791.40

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Solution

The fourth proportional to 118,968.12, 164,204.75 and 80,791.40 is: 111,511.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,968.12 : 164,204.75 = 80,791.40 : x
  2. Step 2: Convert to fraction form
    118,968.12/164,204.75 = 80,791.40/x
  3. Step 3: Cross multiply
    118,968.12x = 164,204.75 × 80,791.40
  4. Step 4: Simplify right side
    118,968.12x = 13,266,331,639.15
  5. Step 5: Solve for x
    x = 13,266,331,639.15/118,968.12
  6. Step 6: Final answer
    x = 111,511.65

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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.