Home / 128,946.91-193,168.75-84,438.73

Finding the Fourth Proportional to 128,946.91, 193,168.75 and 84,438.73

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Solution

The fourth proportional to 128,946.91, 193,168.75 and 84,438.73 is: 126,493.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,946.91 : 193,168.75 = 84,438.73 : x
  2. Step 2: Convert to fraction form
    128,946.91/193,168.75 = 84,438.73/x
  3. Step 3: Cross multiply
    128,946.91x = 193,168.75 × 84,438.73
  4. Step 4: Simplify right side
    128,946.91x = 16,310,923,170.94
  5. Step 5: Solve for x
    x = 16,310,923,170.94/128,946.91
  6. Step 6: Final answer
    x = 126,493.32

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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.