Home / 143,786.75-198,426.51-83,393.21

Finding the Fourth Proportional to 143,786.75, 198,426.51 and 83,393.21

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Solution

The fourth proportional to 143,786.75, 198,426.51 and 83,393.21 is: 115,083.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,786.75 : 198,426.51 = 83,393.21 : x
  2. Step 2: Convert to fraction form
    143,786.75/198,426.51 = 83,393.21/x
  3. Step 3: Cross multiply
    143,786.75x = 198,426.51 × 83,393.21
  4. Step 4: Simplify right side
    143,786.75x = 16,547,424,114.06
  5. Step 5: Solve for x
    x = 16,547,424,114.06/143,786.75
  6. Step 6: Final answer
    x = 115,083.10

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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.