Home / 118,794.12-163,929-65,069.79

Finding the Fourth Proportional to 118,794.12, 163,929 and 65,069.79

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Solution

The fourth proportional to 118,794.12, 163,929 and 65,069.79 is: 89,792.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,794.12 : 163,929 = 65,069.79 : x
  2. Step 2: Convert to fraction form
    118,794.12/163,929 = 65,069.79/x
  3. Step 3: Cross multiply
    118,794.12x = 163,929 × 65,069.79
  4. Step 4: Simplify right side
    118,794.12x = 10,666,825,604.91
  5. Step 5: Solve for x
    x = 10,666,825,604.91/118,794.12
  6. Step 6: Final answer
    x = 89,792.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.