Home / 144,090.35-198,844.80-80,428.15

Finding the Fourth Proportional to 144,090.35, 198,844.80 and 80,428.15

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Solution

The fourth proportional to 144,090.35, 198,844.80 and 80,428.15 is: 110,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,090.35 : 198,844.80 = 80,428.15 : x
  2. Step 2: Convert to fraction form
    144,090.35/198,844.80 = 80,428.15/x
  3. Step 3: Cross multiply
    144,090.35x = 198,844.80 × 80,428.15
  4. Step 4: Simplify right side
    144,090.35x = 15,992,719,015.02
  5. Step 5: Solve for x
    x = 15,992,719,015.02/144,090.35
  6. Step 6: Final answer
    x = 110,990.91

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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.