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Finding the Fourth Proportional to 111,129.30, 166,693.95 and 48,799.80

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Solution

The fourth proportional to 111,129.30, 166,693.95 and 48,799.80 is: 73,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,129.30 : 166,693.95 = 48,799.80 : x
  2. Step 2: Convert to fraction form
    111,129.30/166,693.95 = 48,799.80/x
  3. Step 3: Cross multiply
    111,129.30x = 166,693.95 × 48,799.80
  4. Step 4: Simplify right side
    111,129.30x = 8,134,631,421.21
  5. Step 5: Solve for x
    x = 8,134,631,421.21/111,129.30
  6. Step 6: Final answer
    x = 73,199.70

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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.