Home / 154,419.40-231,629.10-109,318.60

Finding the Fourth Proportional to 154,419.40, 231,629.10 and 109,318.60

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Solution

The fourth proportional to 154,419.40, 231,629.10 and 109,318.60 is: 163,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,419.40 : 231,629.10 = 109,318.60 : x
  2. Step 2: Convert to fraction form
    154,419.40/231,629.10 = 109,318.60/x
  3. Step 3: Cross multiply
    154,419.40x = 231,629.10 × 109,318.60
  4. Step 4: Simplify right side
    154,419.40x = 25,321,368,931.26
  5. Step 5: Solve for x
    x = 25,321,368,931.26/154,419.40
  6. Step 6: Final answer
    x = 163,977.90

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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.