Home / 144,917.10-217,274.40-85,722.30

Finding the Fourth Proportional to 144,917.10, 217,274.40 and 85,722.30

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Solution

The fourth proportional to 144,917.10, 217,274.40 and 85,722.30 is: 128,523.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,917.10 : 217,274.40 = 85,722.30 : x
  2. Step 2: Convert to fraction form
    144,917.10/217,274.40 = 85,722.30/x
  3. Step 3: Cross multiply
    144,917.10x = 217,274.40 × 85,722.30
  4. Step 4: Simplify right side
    144,917.10x = 18,625,261,299.12
  5. Step 5: Solve for x
    x = 18,625,261,299.12/144,917.10
  6. Step 6: Final answer
    x = 128,523.56

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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.