Home / 112,103.45-154,698.05-61,115.09

Finding the Fourth Proportional to 112,103.45, 154,698.05 and 61,115.09

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Solution

The fourth proportional to 112,103.45, 154,698.05 and 61,115.09 is: 84,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,103.45 : 154,698.05 = 61,115.09 : x
  2. Step 2: Convert to fraction form
    112,103.45/154,698.05 = 61,115.09/x
  3. Step 3: Cross multiply
    112,103.45x = 154,698.05 × 61,115.09
  4. Step 4: Simplify right side
    112,103.45x = 9,454,384,943.00
  5. Step 5: Solve for x
    x = 9,454,384,943.00/112,103.45
  6. Step 6: Final answer
    x = 84,336.25

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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.