Home / 111,836.89-154,392.09-86,285.85

Finding the Fourth Proportional to 111,836.89, 154,392.09 and 86,285.85

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Solution

The fourth proportional to 111,836.89, 154,392.09 and 86,285.85 is: 119,118.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,836.89 : 154,392.09 = 86,285.85 : x
  2. Step 2: Convert to fraction form
    111,836.89/154,392.09 = 86,285.85/x
  3. Step 3: Cross multiply
    111,836.89x = 154,392.09 × 86,285.85
  4. Step 4: Simplify right side
    111,836.89x = 13,321,851,946.97
  5. Step 5: Solve for x
    x = 13,321,851,946.97/111,836.89
  6. Step 6: Final answer
    x = 119,118.58

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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.