Home / 205,750.14-309,142.80-130,903.71

Finding the Fourth Proportional to 205,750.14, 309,142.80 and 130,903.71

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Solution

The fourth proportional to 205,750.14, 309,142.80 and 130,903.71 is: 196,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,750.14 : 309,142.80 = 130,903.71 : x
  2. Step 2: Convert to fraction form
    205,750.14/309,142.80 = 130,903.71/x
  3. Step 3: Cross multiply
    205,750.14x = 309,142.80 × 130,903.71
  4. Step 4: Simplify right side
    205,750.14x = 40,467,939,439.79
  5. Step 5: Solve for x
    x = 40,467,939,439.79/205,750.14
  6. Step 6: Final answer
    x = 196,684.87

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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.