Home / 107,729.40-161,766.90-72,823.80

Finding the Fourth Proportional to 107,729.40, 161,766.90 and 72,823.80

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Solution

The fourth proportional to 107,729.40, 161,766.90 and 72,823.80 is: 109,352.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,729.40 : 161,766.90 = 72,823.80 : x
  2. Step 2: Convert to fraction form
    107,729.40/161,766.90 = 72,823.80/x
  3. Step 3: Cross multiply
    107,729.40x = 161,766.90 × 72,823.80
  4. Step 4: Simplify right side
    107,729.40x = 11,780,480,372.22
  5. Step 5: Solve for x
    x = 11,780,480,372.22/107,729.40
  6. Step 6: Final answer
    x = 109,352.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.