Home / 208,621.82-287,934.98-122,580.79

Finding the Fourth Proportional to 208,621.82, 287,934.98 and 122,580.79

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Solution

The fourth proportional to 208,621.82, 287,934.98 and 122,580.79 is: 169,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,621.82 : 287,934.98 = 122,580.79 : x
  2. Step 2: Convert to fraction form
    208,621.82/287,934.98 = 122,580.79/x
  3. Step 3: Cross multiply
    208,621.82x = 287,934.98 × 122,580.79
  4. Step 4: Simplify right side
    208,621.82x = 35,295,295,984.29
  5. Step 5: Solve for x
    x = 35,295,295,984.29/208,621.82
  6. Step 6: Final answer
    x = 169,183.14

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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.