Home / 213,128.20-293,936.34-128,229.40

Finding the Fourth Proportional to 213,128.20, 293,936.34 and 128,229.40

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Solution

The fourth proportional to 213,128.20, 293,936.34 and 128,229.40 is: 176,847.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,128.20 : 293,936.34 = 128,229.40 : x
  2. Step 2: Convert to fraction form
    213,128.20/293,936.34 = 128,229.40/x
  3. Step 3: Cross multiply
    213,128.20x = 293,936.34 × 128,229.40
  4. Step 4: Simplify right side
    213,128.20x = 37,691,280,516.40
  5. Step 5: Solve for x
    x = 37,691,280,516.40/213,128.20
  6. Step 6: Final answer
    x = 176,847.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.