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Finding the Fourth Proportional to 105,310.40, 157,735.20 and 63,684.80

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Solution

The fourth proportional to 105,310.40, 157,735.20 and 63,684.80 is: 95,387.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,310.40 : 157,735.20 = 63,684.80 : x
  2. Step 2: Convert to fraction form
    105,310.40/157,735.20 = 63,684.80/x
  3. Step 3: Cross multiply
    105,310.40x = 157,735.20 × 63,684.80
  4. Step 4: Simplify right side
    105,310.40x = 10,045,334,664.96
  5. Step 5: Solve for x
    x = 10,045,334,664.96/105,310.40
  6. Step 6: Final answer
    x = 95,387.87

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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.