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Finding the Fourth Proportional to 119,885.97, 165,430.85 and 66,167.52

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Solution

The fourth proportional to 119,885.97, 165,430.85 and 66,167.52 is: 91,304.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,885.97 : 165,430.85 = 66,167.52 : x
  2. Step 2: Convert to fraction form
    119,885.97/165,430.85 = 66,167.52/x
  3. Step 3: Cross multiply
    119,885.97x = 165,430.85 × 66,167.52
  4. Step 4: Simplify right side
    119,885.97x = 10,946,148,745.15
  5. Step 5: Solve for x
    x = 10,946,148,745.15/119,885.97
  6. Step 6: Final answer
    x = 91,304.67

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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.