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Finding the Fourth Proportional to 111,498.60, 166,859.10 and 76,506.60

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Solution

The fourth proportional to 111,498.60, 166,859.10 and 76,506.60 is: 114,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,498.60 : 166,859.10 = 76,506.60 : x
  2. Step 2: Convert to fraction form
    111,498.60/166,859.10 = 76,506.60/x
  3. Step 3: Cross multiply
    111,498.60x = 166,859.10 × 76,506.60
  4. Step 4: Simplify right side
    111,498.60x = 12,765,822,420.06
  5. Step 5: Solve for x
    x = 12,765,822,420.06/111,498.60
  6. Step 6: Final answer
    x = 114,493.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.