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Finding the Fourth Proportional to 112,185, 154,818.20 and 61,198.57

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Solution

The fourth proportional to 112,185, 154,818.20 and 61,198.57 is: 84,455.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,185 : 154,818.20 = 61,198.57 : x
  2. Step 2: Convert to fraction form
    112,185/154,818.20 = 61,198.57/x
  3. Step 3: Cross multiply
    112,185x = 154,818.20 × 61,198.57
  4. Step 4: Simplify right side
    112,185x = 9,474,652,796.49
  5. Step 5: Solve for x
    x = 9,474,652,796.49/112,185
  6. Step 6: Final answer
    x = 84,455.61

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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.