Home / 144,965.72-217,511.15-78,452.78

Finding the Fourth Proportional to 144,965.72, 217,511.15 and 78,452.78

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Solution

The fourth proportional to 144,965.72, 217,511.15 and 78,452.78 is: 117,713.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,965.72 : 217,511.15 = 78,452.78 : x
  2. Step 2: Convert to fraction form
    144,965.72/217,511.15 = 78,452.78/x
  3. Step 3: Cross multiply
    144,965.72x = 217,511.15 × 78,452.78
  4. Step 4: Simplify right side
    144,965.72x = 17,064,352,918.68
  5. Step 5: Solve for x
    x = 17,064,352,918.68/144,965.72
  6. Step 6: Final answer
    x = 117,713.03

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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.