Home / 205,074.40-307,611.60-72,104.80

Finding the Fourth Proportional to 205,074.40, 307,611.60 and 72,104.80

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Solution

The fourth proportional to 205,074.40, 307,611.60 and 72,104.80 is: 108,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,074.40 : 307,611.60 = 72,104.80 : x
  2. Step 2: Convert to fraction form
    205,074.40/307,611.60 = 72,104.80/x
  3. Step 3: Cross multiply
    205,074.40x = 307,611.60 × 72,104.80
  4. Step 4: Simplify right side
    205,074.40x = 22,180,272,895.68
  5. Step 5: Solve for x
    x = 22,180,272,895.68/205,074.40
  6. Step 6: Final answer
    x = 108,157.20

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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.