Home / 144,968.73-217,515.66-78,455.79

Finding the Fourth Proportional to 144,968.73, 217,515.66 and 78,455.79

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Solution

The fourth proportional to 144,968.73, 217,515.66 and 78,455.79 is: 117,717.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,968.73 : 217,515.66 = 78,455.79 : x
  2. Step 2: Convert to fraction form
    144,968.73/217,515.66 = 78,455.79/x
  3. Step 3: Cross multiply
    144,968.73x = 217,515.66 × 78,455.79
  4. Step 4: Simplify right side
    144,968.73x = 17,065,362,942.67
  5. Step 5: Solve for x
    x = 17,065,362,942.67/144,968.73
  6. Step 6: Final answer
    x = 117,717.54

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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.