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Finding the Fourth Proportional to 115,386.56, 173,101.20 and 36,520.64

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Solution

The fourth proportional to 115,386.56, 173,101.20 and 36,520.64 is: 54,787.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,386.56 : 173,101.20 = 36,520.64 : x
  2. Step 2: Convert to fraction form
    115,386.56/173,101.20 = 36,520.64/x
  3. Step 3: Cross multiply
    115,386.56x = 173,101.20 × 36,520.64
  4. Step 4: Simplify right side
    115,386.56x = 6,321,766,608.77
  5. Step 5: Solve for x
    x = 6,321,766,608.77/115,386.56
  6. Step 6: Final answer
    x = 54,787.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.