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Finding the Fourth Proportional to 144,071.61, 198,837.63 and 80,422.62

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Solution

The fourth proportional to 144,071.61, 198,837.63 and 80,422.62 is: 110,993.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,071.61 : 198,837.63 = 80,422.62 : x
  2. Step 2: Convert to fraction form
    144,071.61/198,837.63 = 80,422.62/x
  3. Step 3: Cross multiply
    144,071.61x = 198,837.63 × 80,422.62
  4. Step 4: Simplify right side
    144,071.61x = 15,991,043,159.19
  5. Step 5: Solve for x
    x = 15,991,043,159.19/144,071.61
  6. Step 6: Final answer
    x = 110,993.71

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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.