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Finding the Fourth Proportional to 119,903.40, 165,464.40 and 66,190.08

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Solution

The fourth proportional to 119,903.40, 165,464.40 and 66,190.08 is: 91,341.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,903.40 : 165,464.40 = 66,190.08 : x
  2. Step 2: Convert to fraction form
    119,903.40/165,464.40 = 66,190.08/x
  3. Step 3: Cross multiply
    119,903.40x = 165,464.40 × 66,190.08
  4. Step 4: Simplify right side
    119,903.40x = 10,952,101,873.15
  5. Step 5: Solve for x
    x = 10,952,101,873.15/119,903.40
  6. Step 6: Final answer
    x = 91,341.05

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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.