Home / 143,688.09-198,289.80-83,270.37

Finding the Fourth Proportional to 143,688.09, 198,289.80 and 83,270.37

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Solution

The fourth proportional to 143,688.09, 198,289.80 and 83,270.37 is: 114,913.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,688.09 : 198,289.80 = 83,270.37 : x
  2. Step 2: Convert to fraction form
    143,688.09/198,289.80 = 83,270.37/x
  3. Step 3: Cross multiply
    143,688.09x = 198,289.80 × 83,270.37
  4. Step 4: Simplify right side
    143,688.09x = 16,511,665,013.23
  5. Step 5: Solve for x
    x = 16,511,665,013.23/143,688.09
  6. Step 6: Final answer
    x = 114,913.25

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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.