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Finding the Fourth Proportional to 112,309.84, 154,986.41 and 61,322.41

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Solution

The fourth proportional to 112,309.84, 154,986.41 and 61,322.41 is: 84,624.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,309.84 : 154,986.41 = 61,322.41 : x
  2. Step 2: Convert to fraction form
    112,309.84/154,986.41 = 61,322.41/x
  3. Step 3: Cross multiply
    112,309.84x = 154,986.41 × 61,322.41
  4. Step 4: Simplify right side
    112,309.84x = 9,504,140,178.45
  5. Step 5: Solve for x
    x = 9,504,140,178.45/112,309.84
  6. Step 6: Final answer
    x = 84,624.29

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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.