Home / 120,614.12-180,915.94-40,646.80

Finding the Fourth Proportional to 120,614.12, 180,915.94 and 40,646.80

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Solution

The fourth proportional to 120,614.12, 180,915.94 and 40,646.80 is: 60,968.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,614.12 : 180,915.94 = 40,646.80 : x
  2. Step 2: Convert to fraction form
    120,614.12/180,915.94 = 40,646.80/x
  3. Step 3: Cross multiply
    120,614.12x = 180,915.94 × 40,646.80
  4. Step 4: Simplify right side
    120,614.12x = 7,353,654,029.99
  5. Step 5: Solve for x
    x = 7,353,654,029.99/120,614.12
  6. Step 6: Final answer
    x = 60,968.43

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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.