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Finding the Fourth Proportional to 119,606.55, 165,059.15 and 65,891.20

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Solution

The fourth proportional to 119,606.55, 165,059.15 and 65,891.20 is: 90,931.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,606.55 : 165,059.15 = 65,891.20 : x
  2. Step 2: Convert to fraction form
    119,606.55/165,059.15 = 65,891.20/x
  3. Step 3: Cross multiply
    119,606.55x = 165,059.15 × 65,891.20
  4. Step 4: Simplify right side
    119,606.55x = 10,875,945,464.48
  5. Step 5: Solve for x
    x = 10,875,945,464.48/119,606.55
  6. Step 6: Final answer
    x = 90,931.02

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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.