Home / 207,929.65-287,004.26-121,907.30

Finding the Fourth Proportional to 207,929.65, 287,004.26 and 121,907.30

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Solution

The fourth proportional to 207,929.65, 287,004.26 and 121,907.30 is: 168,268.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,929.65 : 287,004.26 = 121,907.30 : x
  2. Step 2: Convert to fraction form
    207,929.65/287,004.26 = 121,907.30/x
  3. Step 3: Cross multiply
    207,929.65x = 287,004.26 × 121,907.30
  4. Step 4: Simplify right side
    207,929.65x = 34,987,915,716.44
  5. Step 5: Solve for x
    x = 34,987,915,716.44/207,929.65
  6. Step 6: Final answer
    x = 168,268.05

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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.