Home / 141,820.26-212,529.87-78,668.25

Finding the Fourth Proportional to 141,820.26, 212,529.87 and 78,668.25

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Solution

The fourth proportional to 141,820.26, 212,529.87 and 78,668.25 is: 117,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,820.26 : 212,529.87 = 78,668.25 : x
  2. Step 2: Convert to fraction form
    141,820.26/212,529.87 = 78,668.25/x
  3. Step 3: Cross multiply
    141,820.26x = 212,529.87 × 78,668.25
  4. Step 4: Simplify right side
    141,820.26x = 16,719,352,945.63
  5. Step 5: Solve for x
    x = 16,719,352,945.63/141,820.26
  6. Step 6: Final answer
    x = 117,891.15

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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.