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Finding the Fourth Proportional to 112,105.68, 154,698.84 and 61,804.68

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Solution

The fourth proportional to 112,105.68, 154,698.84 and 61,804.68 is: 85,286.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,105.68 : 154,698.84 = 61,804.68 : x
  2. Step 2: Convert to fraction form
    112,105.68/154,698.84 = 61,804.68/x
  3. Step 3: Cross multiply
    112,105.68x = 154,698.84 × 61,804.68
  4. Step 4: Simplify right side
    112,105.68x = 9,561,112,302.57
  5. Step 5: Solve for x
    x = 9,561,112,302.57/112,105.68
  6. Step 6: Final answer
    x = 85,286.60

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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.