Home / 230,890.72-318,626.17-128,917.92

Finding the Fourth Proportional to 230,890.72, 318,626.17 and 128,917.92

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Solution

The fourth proportional to 230,890.72, 318,626.17 and 128,917.92 is: 177,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,890.72 : 318,626.17 = 128,917.92 : x
  2. Step 2: Convert to fraction form
    230,890.72/318,626.17 = 128,917.92/x
  3. Step 3: Cross multiply
    230,890.72x = 318,626.17 × 128,917.92
  4. Step 4: Simplify right side
    230,890.72x = 41,076,623,093.97
  5. Step 5: Solve for x
    x = 41,076,623,093.97/230,890.72
  6. Step 6: Final answer
    x = 177,905.04

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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.