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Finding the Fourth Proportional to 111,765.61, 154,230.30 and 64,022.03

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Solution

The fourth proportional to 111,765.61, 154,230.30 and 64,022.03 is: 88,346.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,765.61 : 154,230.30 = 64,022.03 : x
  2. Step 2: Convert to fraction form
    111,765.61/154,230.30 = 64,022.03/x
  3. Step 3: Cross multiply
    111,765.61x = 154,230.30 × 64,022.03
  4. Step 4: Simplify right side
    111,765.61x = 9,874,136,880.78
  5. Step 5: Solve for x
    x = 9,874,136,880.78/111,765.61
  6. Step 6: Final answer
    x = 88,346.83

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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.