Home / 144,765.24-217,011.78-78,105.48

Finding the Fourth Proportional to 144,765.24, 217,011.78 and 78,105.48

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Solution

The fourth proportional to 144,765.24, 217,011.78 and 78,105.48 is: 117,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,765.24 : 217,011.78 = 78,105.48 : x
  2. Step 2: Convert to fraction form
    144,765.24/217,011.78 = 78,105.48/x
  3. Step 3: Cross multiply
    144,765.24x = 217,011.78 × 78,105.48
  4. Step 4: Simplify right side
    144,765.24x = 16,949,809,242.55
  5. Step 5: Solve for x
    x = 16,949,809,242.55/144,765.24
  6. Step 6: Final answer
    x = 117,084.80

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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.