Home / 143,940.08-198,573.12-83,475.69

Finding the Fourth Proportional to 143,940.08, 198,573.12 and 83,475.69

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Solution

The fourth proportional to 143,940.08, 198,573.12 and 83,475.69 is: 115,159.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,940.08 : 198,573.12 = 83,475.69 : x
  2. Step 2: Convert to fraction form
    143,940.08/198,573.12 = 83,475.69/x
  3. Step 3: Cross multiply
    143,940.08x = 198,573.12 × 83,475.69
  4. Step 4: Simplify right side
    143,940.08x = 16,576,028,207.45
  5. Step 5: Solve for x
    x = 16,576,028,207.45/143,940.08
  6. Step 6: Final answer
    x = 115,159.23

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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.