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Finding the Fourth Proportional to 119,745.76, 165,256.48 and 66,030.56

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Solution

The fourth proportional to 119,745.76, 165,256.48 and 66,030.56 is: 91,126.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,745.76 : 165,256.48 = 66,030.56 : x
  2. Step 2: Convert to fraction form
    119,745.76/165,256.48 = 66,030.56/x
  3. Step 3: Cross multiply
    119,745.76x = 165,256.48 × 66,030.56
  4. Step 4: Simplify right side
    119,745.76x = 10,911,977,918.03
  5. Step 5: Solve for x
    x = 10,911,977,918.03/119,745.76
  6. Step 6: Final answer
    x = 91,126.22

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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.