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Finding the Fourth Proportional to 111,165.48, 166,621.86 and 51,990.12

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Solution

The fourth proportional to 111,165.48, 166,621.86 and 51,990.12 is: 77,926.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,165.48 : 166,621.86 = 51,990.12 : x
  2. Step 2: Convert to fraction form
    111,165.48/166,621.86 = 51,990.12/x
  3. Step 3: Cross multiply
    111,165.48x = 166,621.86 × 51,990.12
  4. Step 4: Simplify right side
    111,165.48x = 8,662,690,496.02
  5. Step 5: Solve for x
    x = 8,662,690,496.02/111,165.48
  6. Step 6: Final answer
    x = 77,926.08

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1.5x scale

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.