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Finding the Fourth Proportional to 143,425.89, 197,924.92 and 79,762.32

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Solution

The fourth proportional to 143,425.89, 197,924.92 and 79,762.32 is: 110,070.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,425.89 : 197,924.92 = 79,762.32 : x
  2. Step 2: Convert to fraction form
    143,425.89/197,924.92 = 79,762.32/x
  3. Step 3: Cross multiply
    143,425.89x = 197,924.92 × 79,762.32
  4. Step 4: Simplify right side
    143,425.89x = 15,786,950,605.61
  5. Step 5: Solve for x
    x = 15,786,950,605.61/143,425.89
  6. Step 6: Final answer
    x = 110,070.44

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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.