Home / 143,915.55-198,603.66-79,383.35

Finding the Fourth Proportional to 143,915.55, 198,603.66 and 79,383.35

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Solution

The fourth proportional to 143,915.55, 198,603.66 and 79,383.35 is: 109,549.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,915.55 : 198,603.66 = 79,383.35 : x
  2. Step 2: Convert to fraction form
    143,915.55/198,603.66 = 79,383.35/x
  3. Step 3: Cross multiply
    143,915.55x = 198,603.66 × 79,383.35
  4. Step 4: Simplify right side
    143,915.55x = 15,765,822,860.04
  5. Step 5: Solve for x
    x = 15,765,822,860.04/143,915.55
  6. Step 6: Final answer
    x = 109,549.13

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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.