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Finding the Fourth Proportional to 208,054.70, 287,130.66 and 117,418.59

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Solution

The fourth proportional to 208,054.70, 287,130.66 and 117,418.59 is: 162,046.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,054.70 : 287,130.66 = 117,418.59 : x
  2. Step 2: Convert to fraction form
    208,054.70/287,130.66 = 117,418.59/x
  3. Step 3: Cross multiply
    208,054.70x = 287,130.66 × 117,418.59
  4. Step 4: Simplify right side
    208,054.70x = 33,714,476,490.45
  5. Step 5: Solve for x
    x = 33,714,476,490.45/208,054.70
  6. Step 6: Final answer
    x = 162,046.21

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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.