Home / 140,544.15-210,478.44-80,390.28

Finding the Fourth Proportional to 140,544.15, 210,478.44 and 80,390.28

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Solution

The fourth proportional to 140,544.15, 210,478.44 and 80,390.28 is: 120,392.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,544.15 : 210,478.44 = 80,390.28 : x
  2. Step 2: Convert to fraction form
    140,544.15/210,478.44 = 80,390.28/x
  3. Step 3: Cross multiply
    140,544.15x = 210,478.44 × 80,390.28
  4. Step 4: Simplify right side
    140,544.15x = 16,920,420,725.56
  5. Step 5: Solve for x
    x = 16,920,420,725.56/140,544.15
  6. Step 6: Final answer
    x = 120,392.21

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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.