Home / 128,498.04-192,747-53,653.44

Finding the Fourth Proportional to 128,498.04, 192,747 and 53,653.44

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Solution

The fourth proportional to 128,498.04, 192,747 and 53,653.44 is: 80,480.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,498.04 : 192,747 = 53,653.44 : x
  2. Step 2: Convert to fraction form
    128,498.04/192,747 = 53,653.44/x
  3. Step 3: Cross multiply
    128,498.04x = 192,747 × 53,653.44
  4. Step 4: Simplify right side
    128,498.04x = 10,341,539,599.68
  5. Step 5: Solve for x
    x = 10,341,539,599.68/128,498.04
  6. Step 6: Final answer
    x = 80,480.13

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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.