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Finding the Fourth Proportional to 144,800.40, 217,200.60 and 122,711.70

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Solution

The fourth proportional to 144,800.40, 217,200.60 and 122,711.70 is: 184,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,800.40 : 217,200.60 = 122,711.70 : x
  2. Step 2: Convert to fraction form
    144,800.40/217,200.60 = 122,711.70/x
  3. Step 3: Cross multiply
    144,800.40x = 217,200.60 × 122,711.70
  4. Step 4: Simplify right side
    144,800.40x = 26,653,054,867.02
  5. Step 5: Solve for x
    x = 26,653,054,867.02/144,800.40
  6. Step 6: Final answer
    x = 184,067.55

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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.