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Finding the Fourth Proportional to 144,090.82, 198,844.84 and 80,428.06

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Solution

The fourth proportional to 144,090.82, 198,844.84 and 80,428.06 is: 110,990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,090.82 : 198,844.84 = 80,428.06 : x
  2. Step 2: Convert to fraction form
    144,090.82/198,844.84 = 80,428.06/x
  3. Step 3: Cross multiply
    144,090.82x = 198,844.84 × 80,428.06
  4. Step 4: Simplify right side
    144,090.82x = 15,992,704,722.21
  5. Step 5: Solve for x
    x = 15,992,704,722.21/144,090.82
  6. Step 6: Final answer
    x = 110,990.45

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1.5x scale

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.