Home / 143,915.41-198,604.07-79,386.92

Finding the Fourth Proportional to 143,915.41, 198,604.07 and 79,386.92

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Solution

The fourth proportional to 143,915.41, 198,604.07 and 79,386.92 is: 109,554.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,915.41 : 198,604.07 = 79,386.92 : x
  2. Step 2: Convert to fraction form
    143,915.41/198,604.07 = 79,386.92/x
  3. Step 3: Cross multiply
    143,915.41x = 198,604.07 × 79,386.92
  4. Step 4: Simplify right side
    143,915.41x = 15,766,565,416.76
  5. Step 5: Solve for x
    x = 15,766,565,416.76/143,915.41
  6. Step 6: Final answer
    x = 109,554.39

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1.5x scale

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.