Home / 208,561.61-287,829.77-117,918.45

Finding the Fourth Proportional to 208,561.61, 287,829.77 and 117,918.45

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Solution

The fourth proportional to 208,561.61, 287,829.77 and 117,918.45 is: 162,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,561.61 : 287,829.77 = 117,918.45 : x
  2. Step 2: Convert to fraction form
    208,561.61/287,829.77 = 117,918.45/x
  3. Step 3: Cross multiply
    208,561.61x = 287,829.77 × 117,918.45
  4. Step 4: Simplify right side
    208,561.61x = 33,940,439,752.66
  5. Step 5: Solve for x
    x = 33,940,439,752.66/208,561.61
  6. Step 6: Final answer
    x = 162,735.79

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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.