Home / 161,435.36-222,780.92-89,815.43

Finding the Fourth Proportional to 161,435.36, 222,780.92 and 89,815.43

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Solution

The fourth proportional to 161,435.36, 222,780.92 and 89,815.43 is: 123,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,435.36 : 222,780.92 = 89,815.43 : x
  2. Step 2: Convert to fraction form
    161,435.36/222,780.92 = 89,815.43/x
  3. Step 3: Cross multiply
    161,435.36x = 222,780.92 × 89,815.43
  4. Step 4: Simplify right side
    161,435.36x = 20,009,164,233.47
  5. Step 5: Solve for x
    x = 20,009,164,233.47/161,435.36
  6. Step 6: Final answer
    x = 123,945.36

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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.