Home / 208,439.80-287,645.70-117,825.10

Finding the Fourth Proportional to 208,439.80, 287,645.70 and 117,825.10

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Solution

The fourth proportional to 208,439.80, 287,645.70 and 117,825.10 is: 162,597.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,439.80 : 287,645.70 = 117,825.10 : x
  2. Step 2: Convert to fraction form
    208,439.80/287,645.70 = 117,825.10/x
  3. Step 3: Cross multiply
    208,439.80x = 287,645.70 × 117,825.10
  4. Step 4: Simplify right side
    208,439.80x = 33,891,883,367.07
  5. Step 5: Solve for x
    x = 33,891,883,367.07/208,439.80
  6. Step 6: Final answer
    x = 162,597.95

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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.