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Finding the Fourth Proportional to 143,028, 197,377.98 and 79,365.63

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Solution

The fourth proportional to 143,028, 197,377.98 and 79,365.63 is: 109,524.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,028 : 197,377.98 = 79,365.63 : x
  2. Step 2: Convert to fraction form
    143,028/197,377.98 = 79,365.63/x
  3. Step 3: Cross multiply
    143,028x = 197,377.98 × 79,365.63
  4. Step 4: Simplify right side
    143,028x = 15,665,027,730.83
  5. Step 5: Solve for x
    x = 15,665,027,730.83/143,028
  6. Step 6: Final answer
    x = 109,524.20

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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.