Home / 140,780.57-211,201.99-77,568.15

Finding the Fourth Proportional to 140,780.57, 211,201.99 and 77,568.15

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Solution

The fourth proportional to 140,780.57, 211,201.99 and 77,568.15 is: 116,369.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,780.57 : 211,201.99 = 77,568.15 : x
  2. Step 2: Convert to fraction form
    140,780.57/211,201.99 = 77,568.15/x
  3. Step 3: Cross multiply
    140,780.57x = 211,201.99 × 77,568.15
  4. Step 4: Simplify right side
    140,780.57x = 16,382,546,941.61
  5. Step 5: Solve for x
    x = 16,382,546,941.61/140,780.57
  6. Step 6: Final answer
    x = 116,369.38

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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.