Home / 140,578.12-210,856.38-51,815.08

Finding the Fourth Proportional to 140,578.12, 210,856.38 and 51,815.08

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Solution

The fourth proportional to 140,578.12, 210,856.38 and 51,815.08 is: 77,718.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,578.12 : 210,856.38 = 51,815.08 : x
  2. Step 2: Convert to fraction form
    140,578.12/210,856.38 = 51,815.08/x
  3. Step 3: Cross multiply
    140,578.12x = 210,856.38 × 51,815.08
  4. Step 4: Simplify right side
    140,578.12x = 10,925,540,198.21
  5. Step 5: Solve for x
    x = 10,925,540,198.21/140,578.12
  6. Step 6: Final answer
    x = 77,718.64

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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.