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Finding the Fourth Proportional to 129,322.88, 193,713.60 and 104,220.80

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Solution

The fourth proportional to 129,322.88, 193,713.60 and 104,220.80 is: 156,113.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,322.88 : 193,713.60 = 104,220.80 : x
  2. Step 2: Convert to fraction form
    129,322.88/193,713.60 = 104,220.80/x
  3. Step 3: Cross multiply
    129,322.88x = 193,713.60 × 104,220.80
  4. Step 4: Simplify right side
    129,322.88x = 20,188,986,362.88
  5. Step 5: Solve for x
    x = 20,188,986,362.88/129,322.88
  6. Step 6: Final answer
    x = 156,113.03

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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.