Home / 111,905.57-154,477.51-66,587.81

Finding the Fourth Proportional to 111,905.57, 154,477.51 and 66,587.81

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Solution

The fourth proportional to 111,905.57, 154,477.51 and 66,587.81 is: 91,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,905.57 : 154,477.51 = 66,587.81 : x
  2. Step 2: Convert to fraction form
    111,905.57/154,477.51 = 66,587.81/x
  3. Step 3: Cross multiply
    111,905.57x = 154,477.51 × 66,587.81
  4. Step 4: Simplify right side
    111,905.57x = 10,286,318,146.30
  5. Step 5: Solve for x
    x = 10,286,318,146.30/111,905.57
  6. Step 6: Final answer
    x = 91,919.62

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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.