Home / 143,185.11-197,597.89-78,657.06

Finding the Fourth Proportional to 143,185.11, 197,597.89 and 78,657.06

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Solution

The fourth proportional to 143,185.11, 197,597.89 and 78,657.06 is: 108,548.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,185.11 : 197,597.89 = 78,657.06 : x
  2. Step 2: Convert to fraction form
    143,185.11/197,597.89 = 78,657.06/x
  3. Step 3: Cross multiply
    143,185.11x = 197,597.89 × 78,657.06
  4. Step 4: Simplify right side
    143,185.11x = 15,542,469,089.60
  5. Step 5: Solve for x
    x = 15,542,469,089.60/143,185.11
  6. Step 6: Final answer
    x = 108,548.08

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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.