Home / 119,904.15-165,465.74-66,187.78

Finding the Fourth Proportional to 119,904.15, 165,465.74 and 66,187.78

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Solution

The fourth proportional to 119,904.15, 165,465.74 and 66,187.78 is: 91,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,904.15 : 165,465.74 = 66,187.78 : x
  2. Step 2: Convert to fraction form
    119,904.15/165,465.74 = 66,187.78/x
  3. Step 3: Cross multiply
    119,904.15x = 165,465.74 × 66,187.78
  4. Step 4: Simplify right side
    119,904.15x = 10,951,809,996.66
  5. Step 5: Solve for x
    x = 10,951,809,996.66/119,904.15
  6. Step 6: Final answer
    x = 91,338.04

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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.