Home / 208,185.12-287,299.31-122,205.65

Finding the Fourth Proportional to 208,185.12, 287,299.31 and 122,205.65

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Solution

The fourth proportional to 208,185.12, 287,299.31 and 122,205.65 is: 168,646.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,185.12 : 287,299.31 = 122,205.65 : x
  2. Step 2: Convert to fraction form
    208,185.12/287,299.31 = 122,205.65/x
  3. Step 3: Cross multiply
    208,185.12x = 287,299.31 × 122,205.65
  4. Step 4: Simplify right side
    208,185.12x = 35,109,596,875.58
  5. Step 5: Solve for x
    x = 35,109,596,875.58/208,185.12
  6. Step 6: Final answer
    x = 168,646.04

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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.