Home / 208,561.36-287,829.43-117,918.21

Finding the Fourth Proportional to 208,561.36, 287,829.43 and 117,918.21

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Solution

The fourth proportional to 208,561.36, 287,829.43 and 117,918.21 is: 162,735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,561.36 : 287,829.43 = 117,918.21 : x
  2. Step 2: Convert to fraction form
    208,561.36/287,829.43 = 117,918.21/x
  3. Step 3: Cross multiply
    208,561.36x = 287,829.43 × 117,918.21
  4. Step 4: Simplify right side
    208,561.36x = 33,940,331,170.92
  5. Step 5: Solve for x
    x = 33,940,331,170.92/208,561.36
  6. Step 6: Final answer
    x = 162,735.47

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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.