Home / 143,822.53-198,431.11-83,381.12

Finding the Fourth Proportional to 143,822.53, 198,431.11 and 83,381.12

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Solution

The fourth proportional to 143,822.53, 198,431.11 and 83,381.12 is: 115,040.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,822.53 : 198,431.11 = 83,381.12 : x
  2. Step 2: Convert to fraction form
    143,822.53/198,431.11 = 83,381.12/x
  3. Step 3: Cross multiply
    143,822.53x = 198,431.11 × 83,381.12
  4. Step 4: Simplify right side
    143,822.53x = 16,545,406,994.03
  5. Step 5: Solve for x
    x = 16,545,406,994.03/143,822.53
  6. Step 6: Final answer
    x = 115,040.44

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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.