Home / 143,686.31-198,289.22-83,261.32

Finding the Fourth Proportional to 143,686.31, 198,289.22 and 83,261.32

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Solution

The fourth proportional to 143,686.31, 198,289.22 and 83,261.32 is: 114,901.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,686.31 : 198,289.22 = 83,261.32 : x
  2. Step 2: Convert to fraction form
    143,686.31/198,289.22 = 83,261.32/x
  3. Step 3: Cross multiply
    143,686.31x = 198,289.22 × 83,261.32
  4. Step 4: Simplify right side
    143,686.31x = 16,509,821,286.94
  5. Step 5: Solve for x
    x = 16,509,821,286.94/143,686.31
  6. Step 6: Final answer
    x = 114,901.84

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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.