Home / 143,530.08-198,072.80-79,870.56

Finding the Fourth Proportional to 143,530.08, 198,072.80 and 79,870.56

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Solution

The fourth proportional to 143,530.08, 198,072.80 and 79,870.56 is: 110,222.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,530.08 : 198,072.80 = 79,870.56 : x
  2. Step 2: Convert to fraction form
    143,530.08/198,072.80 = 79,870.56/x
  3. Step 3: Cross multiply
    143,530.08x = 198,072.80 × 79,870.56
  4. Step 4: Simplify right side
    143,530.08x = 15,820,185,456.77
  5. Step 5: Solve for x
    x = 15,820,185,456.77/143,530.08
  6. Step 6: Final answer
    x = 110,222.09

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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.