Home / 208,296.09-287,367.21-121,066.68

Finding the Fourth Proportional to 208,296.09, 287,367.21 and 121,066.68

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Solution

The fourth proportional to 208,296.09, 287,367.21 and 121,066.68 is: 167,024.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,296.09 : 287,367.21 = 121,066.68 : x
  2. Step 2: Convert to fraction form
    208,296.09/287,367.21 = 121,066.68/x
  3. Step 3: Cross multiply
    208,296.09x = 287,367.21 × 121,066.68
  4. Step 4: Simplify right side
    208,296.09x = 34,790,594,055.56
  5. Step 5: Solve for x
    x = 34,790,594,055.56/208,296.09
  6. Step 6: Final answer
    x = 167,024.71

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1.5x scale

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.