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Finding the Fourth Proportional to 143,635.37, 198,223.88 and 79,971.80

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Solution

The fourth proportional to 143,635.37, 198,223.88 and 79,971.80 is: 110,365.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,635.37 : 198,223.88 = 79,971.80 : x
  2. Step 2: Convert to fraction form
    143,635.37/198,223.88 = 79,971.80/x
  3. Step 3: Cross multiply
    143,635.37x = 198,223.88 × 79,971.80
  4. Step 4: Simplify right side
    143,635.37x = 15,852,319,095.61
  5. Step 5: Solve for x
    x = 15,852,319,095.61/143,635.37
  6. Step 6: Final answer
    x = 110,365.01

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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.