Home / 141,803.26-212,504.37-78,651.21

Finding the Fourth Proportional to 141,803.26, 212,504.37 and 78,651.21

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Solution

The fourth proportional to 141,803.26, 212,504.37 and 78,651.21 is: 117,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,803.26 : 212,504.37 = 78,651.21 : x
  2. Step 2: Convert to fraction form
    141,803.26/212,504.37 = 78,651.21/x
  3. Step 3: Cross multiply
    141,803.26x = 212,504.37 × 78,651.21
  4. Step 4: Simplify right side
    141,803.26x = 16,713,725,830.79
  5. Step 5: Solve for x
    x = 16,713,725,830.79/141,803.26
  6. Step 6: Final answer
    x = 117,865.60

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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.