Home / 208,128.98-287,226.22-117,488.18

Finding the Fourth Proportional to 208,128.98, 287,226.22 and 117,488.18

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Solution

The fourth proportional to 208,128.98, 287,226.22 and 117,488.18 is: 162,138.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,128.98 : 287,226.22 = 117,488.18 : x
  2. Step 2: Convert to fraction form
    208,128.98/287,226.22 = 117,488.18/x
  3. Step 3: Cross multiply
    208,128.98x = 287,226.22 × 117,488.18
  4. Step 4: Simplify right side
    208,128.98x = 33,745,685,836.08
  5. Step 5: Solve for x
    x = 33,745,685,836.08/208,128.98
  6. Step 6: Final answer
    x = 162,138.33

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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.