Home / 161,678.60-223,105-89,078.32

Finding the Fourth Proportional to 161,678.60, 223,105 and 89,078.32

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Solution

The fourth proportional to 161,678.60, 223,105 and 89,078.32 is: 122,921.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,678.60 : 223,105 = 89,078.32 : x
  2. Step 2: Convert to fraction form
    161,678.60/223,105 = 89,078.32/x
  3. Step 3: Cross multiply
    161,678.60x = 223,105 × 89,078.32
  4. Step 4: Simplify right side
    161,678.60x = 19,873,818,583.60
  5. Step 5: Solve for x
    x = 19,873,818,583.60/161,678.60
  6. Step 6: Final answer
    x = 122,921.76

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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.