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Finding the Fourth Proportional to 111,213.40, 166,601.40 and 103,340.20

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Solution

The fourth proportional to 111,213.40, 166,601.40 and 103,340.20 is: 154,807.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,213.40 : 166,601.40 = 103,340.20 : x
  2. Step 2: Convert to fraction form
    111,213.40/166,601.40 = 103,340.20/x
  3. Step 3: Cross multiply
    111,213.40x = 166,601.40 × 103,340.20
  4. Step 4: Simplify right side
    111,213.40x = 17,216,621,996.28
  5. Step 5: Solve for x
    x = 17,216,621,996.28/111,213.40
  6. Step 6: Final answer
    x = 154,807.08

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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.