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Finding the Fourth Proportional to 119,775.74, 165,291.30 and 66,062.21

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Solution

The fourth proportional to 119,775.74, 165,291.30 and 66,062.21 is: 91,166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,775.74 : 165,291.30 = 66,062.21 : x
  2. Step 2: Convert to fraction form
    119,775.74/165,291.30 = 66,062.21/x
  3. Step 3: Cross multiply
    119,775.74x = 165,291.30 × 66,062.21
  4. Step 4: Simplify right side
    119,775.74x = 10,919,507,745.32
  5. Step 5: Solve for x
    x = 10,919,507,745.32/119,775.74
  6. Step 6: Final answer
    x = 91,166.28

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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.