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Finding the Fourth Proportional to 76,191.18, 114,285.54 and 20,787.18

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Solution

The fourth proportional to 76,191.18, 114,285.54 and 20,787.18 is: 31,180.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,191.18 : 114,285.54 = 20,787.18 : x
  2. Step 2: Convert to fraction form
    76,191.18/114,285.54 = 20,787.18/x
  3. Step 3: Cross multiply
    76,191.18x = 114,285.54 × 20,787.18
  4. Step 4: Simplify right side
    76,191.18x = 2,375,674,091.38
  5. Step 5: Solve for x
    x = 2,375,674,091.38/76,191.18
  6. Step 6: Final answer
    x = 31,180.43

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1.5x scale

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.