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Finding the Fourth Proportional to 119,765.70, 165,273.12 and 66,050.70

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Solution

The fourth proportional to 119,765.70, 165,273.12 and 66,050.70 is: 91,148.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,765.70 : 165,273.12 = 66,050.70 : x
  2. Step 2: Convert to fraction form
    119,765.70/165,273.12 = 66,050.70/x
  3. Step 3: Cross multiply
    119,765.70x = 165,273.12 × 66,050.70
  4. Step 4: Simplify right side
    119,765.70x = 10,916,405,267.18
  5. Step 5: Solve for x
    x = 10,916,405,267.18/119,765.70
  6. Step 6: Final answer
    x = 91,148.01

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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.