Home / 127,688.96-176,028.16-89,845.76

Finding the Fourth Proportional to 127,688.96, 176,028.16 and 89,845.76

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Solution

The fourth proportional to 127,688.96, 176,028.16 and 89,845.76 is: 123,858.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,688.96 : 176,028.16 = 89,845.76 : x
  2. Step 2: Convert to fraction form
    127,688.96/176,028.16 = 89,845.76/x
  3. Step 3: Cross multiply
    127,688.96x = 176,028.16 × 89,845.76
  4. Step 4: Simplify right side
    127,688.96x = 15,815,383,816.60
  5. Step 5: Solve for x
    x = 15,815,383,816.60/127,688.96
  6. Step 6: Final answer
    x = 123,858.66

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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.