Home / 171,331.76-236,511.96-128,900.72

Finding the Fourth Proportional to 171,331.76, 236,511.96 and 128,900.72

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Solution

The fourth proportional to 171,331.76, 236,511.96 and 128,900.72 is: 177,938.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,331.76 : 236,511.96 = 128,900.72 : x
  2. Step 2: Convert to fraction form
    171,331.76/236,511.96 = 128,900.72/x
  3. Step 3: Cross multiply
    171,331.76x = 236,511.96 × 128,900.72
  4. Step 4: Simplify right side
    171,331.76x = 30,486,561,932.61
  5. Step 5: Solve for x
    x = 30,486,561,932.61/171,331.76
  6. Step 6: Final answer
    x = 177,938.77

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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.