Home / 128,272.30-192,080.40-94,811.20

Finding the Fourth Proportional to 128,272.30, 192,080.40 and 94,811.20

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Solution

The fourth proportional to 128,272.30, 192,080.40 and 94,811.20 is: 141,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,272.30 : 192,080.40 = 94,811.20 : x
  2. Step 2: Convert to fraction form
    128,272.30/192,080.40 = 94,811.20/x
  3. Step 3: Cross multiply
    128,272.30x = 192,080.40 × 94,811.20
  4. Step 4: Simplify right side
    128,272.30x = 18,211,373,220.48
  5. Step 5: Solve for x
    x = 18,211,373,220.48/128,272.30
  6. Step 6: Final answer
    x = 141,974.33

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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.