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Finding the Fourth Proportional to 94,540.80, 141,811.20 and 72,422.40

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Solution

The fourth proportional to 94,540.80, 141,811.20 and 72,422.40 is: 108,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,540.80 : 141,811.20 = 72,422.40 : x
  2. Step 2: Convert to fraction form
    94,540.80/141,811.20 = 72,422.40/x
  3. Step 3: Cross multiply
    94,540.80x = 141,811.20 × 72,422.40
  4. Step 4: Simplify right side
    94,540.80x = 10,270,307,450.88
  5. Step 5: Solve for x
    x = 10,270,307,450.88/94,540.80
  6. Step 6: Final answer
    x = 108,633.60

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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.