Home / 141,928.34-212,651.52-85,650.20

Finding the Fourth Proportional to 141,928.34, 212,651.52 and 85,650.20

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Solution

The fourth proportional to 141,928.34, 212,651.52 and 85,650.20 is: 128,329.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,928.34 : 212,651.52 = 85,650.20 : x
  2. Step 2: Convert to fraction form
    141,928.34/212,651.52 = 85,650.20/x
  3. Step 3: Cross multiply
    141,928.34x = 212,651.52 × 85,650.20
  4. Step 4: Simplify right side
    141,928.34x = 18,213,644,155.05
  5. Step 5: Solve for x
    x = 18,213,644,155.05/141,928.34
  6. Step 6: Final answer
    x = 128,329.86

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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.