Home / 144,778.28-217,031.26-78,118.52

Finding the Fourth Proportional to 144,778.28, 217,031.26 and 78,118.52

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Solution

The fourth proportional to 144,778.28, 217,031.26 and 78,118.52 is: 117,104.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,778.28 : 217,031.26 = 78,118.52 : x
  2. Step 2: Convert to fraction form
    144,778.28/217,031.26 = 78,118.52/x
  3. Step 3: Cross multiply
    144,778.28x = 217,031.26 × 78,118.52
  4. Step 4: Simplify right side
    144,778.28x = 16,954,160,824.94
  5. Step 5: Solve for x
    x = 16,954,160,824.94/144,778.28
  6. Step 6: Final answer
    x = 117,104.31

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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.