Home / 120,133.08-165,769.32-66,410.88

Finding the Fourth Proportional to 120,133.08, 165,769.32 and 66,410.88

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Solution

The fourth proportional to 120,133.08, 165,769.32 and 66,410.88 is: 91,639.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,133.08 : 165,769.32 = 66,410.88 : x
  2. Step 2: Convert to fraction form
    120,133.08/165,769.32 = 66,410.88/x
  3. Step 3: Cross multiply
    120,133.08x = 165,769.32 × 66,410.88
  4. Step 4: Simplify right side
    120,133.08x = 11,008,886,418.20
  5. Step 5: Solve for x
    x = 11,008,886,418.20/120,133.08
  6. Step 6: Final answer
    x = 91,639.09

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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.