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Finding the Fourth Proportional to 144,291.60, 199,183.72 and 87,721.04

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Solution

The fourth proportional to 144,291.60, 199,183.72 and 87,721.04 is: 121,092.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,291.60 : 199,183.72 = 87,721.04 : x
  2. Step 2: Convert to fraction form
    144,291.60/199,183.72 = 87,721.04/x
  3. Step 3: Cross multiply
    144,291.60x = 199,183.72 × 87,721.04
  4. Step 4: Simplify right side
    144,291.60x = 17,472,603,069.47
  5. Step 5: Solve for x
    x = 17,472,603,069.47/144,291.60
  6. Step 6: Final answer
    x = 121,092.31

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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.