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Finding the Fourth Proportional to 124,370.25, 171,630.96 and 67,781.64

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Solution

The fourth proportional to 124,370.25, 171,630.96 and 67,781.64 is: 93,538.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,370.25 : 171,630.96 = 67,781.64 : x
  2. Step 2: Convert to fraction form
    124,370.25/171,630.96 = 67,781.64/x
  3. Step 3: Cross multiply
    124,370.25x = 171,630.96 × 67,781.64
  4. Step 4: Simplify right side
    124,370.25x = 11,633,427,943.57
  5. Step 5: Solve for x
    x = 11,633,427,943.57/124,370.25
  6. Step 6: Final answer
    x = 93,538.67

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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.