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Finding the Fourth Proportional to 143,104, 197,473.62 and 79,436.79

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Solution

The fourth proportional to 143,104, 197,473.62 and 79,436.79 is: 109,617.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,104 : 197,473.62 = 79,436.79 : x
  2. Step 2: Convert to fraction form
    143,104/197,473.62 = 79,436.79/x
  3. Step 3: Cross multiply
    143,104x = 197,473.62 × 79,436.79
  4. Step 4: Simplify right side
    143,104x = 15,686,670,482.48
  5. Step 5: Solve for x
    x = 15,686,670,482.48/143,104
  6. Step 6: Final answer
    x = 109,617.27

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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.