Home / 141,928.11-212,651.17-85,649.96

Finding the Fourth Proportional to 141,928.11, 212,651.17 and 85,649.96

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Solution

The fourth proportional to 141,928.11, 212,651.17 and 85,649.96 is: 128,329.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,928.11 : 212,651.17 = 85,649.96 : x
  2. Step 2: Convert to fraction form
    141,928.11/212,651.17 = 85,649.96/x
  3. Step 3: Cross multiply
    141,928.11x = 212,651.17 × 85,649.96
  4. Step 4: Simplify right side
    141,928.11x = 18,213,564,521.96
  5. Step 5: Solve for x
    x = 18,213,564,521.96/141,928.11
  6. Step 6: Final answer
    x = 128,329.51

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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.