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Finding the Fourth Proportional to 119,904.51, 165,468.62 and 66,189.40

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Solution

The fourth proportional to 119,904.51, 165,468.62 and 66,189.40 is: 91,341.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,904.51 : 165,468.62 = 66,189.40 : x
  2. Step 2: Convert to fraction form
    119,904.51/165,468.62 = 66,189.40/x
  3. Step 3: Cross multiply
    119,904.51x = 165,468.62 × 66,189.40
  4. Step 4: Simplify right side
    119,904.51x = 10,952,268,676.63
  5. Step 5: Solve for x
    x = 10,952,268,676.63/119,904.51
  6. Step 6: Final answer
    x = 91,341.59

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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.