Home / 143,282.80-214,924.20-128,520.55

Finding the Fourth Proportional to 143,282.80, 214,924.20 and 128,520.55

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Solution

The fourth proportional to 143,282.80, 214,924.20 and 128,520.55 is: 192,780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,282.80 : 214,924.20 = 128,520.55 : x
  2. Step 2: Convert to fraction form
    143,282.80/214,924.20 = 128,520.55/x
  3. Step 3: Cross multiply
    143,282.80x = 214,924.20 × 128,520.55
  4. Step 4: Simplify right side
    143,282.80x = 27,622,176,392.31
  5. Step 5: Solve for x
    x = 27,622,176,392.31/143,282.80
  6. Step 6: Final answer
    x = 192,780.83

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1.5x scale

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.