Home / 151,635.76-209,189.70-87,936.66

Finding the Fourth Proportional to 151,635.76, 209,189.70 and 87,936.66

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Solution

The fourth proportional to 151,635.76, 209,189.70 and 87,936.66 is: 121,313.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,635.76 : 209,189.70 = 87,936.66 : x
  2. Step 2: Convert to fraction form
    151,635.76/209,189.70 = 87,936.66/x
  3. Step 3: Cross multiply
    151,635.76x = 209,189.70 × 87,936.66
  4. Step 4: Simplify right side
    151,635.76x = 18,395,443,524.40
  5. Step 5: Solve for x
    x = 18,395,443,524.40/151,635.76
  6. Step 6: Final answer
    x = 121,313.36

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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.