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Finding the Fourth Proportional to 103,615.52, 155,423.26 and 68,546.96

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Solution

The fourth proportional to 103,615.52, 155,423.26 and 68,546.96 is: 102,820.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.52 : 155,423.26 = 68,546.96 : x
  2. Step 2: Convert to fraction form
    103,615.52/155,423.26 = 68,546.96/x
  3. Step 3: Cross multiply
    103,615.52x = 155,423.26 × 68,546.96
  4. Step 4: Simplify right side
    103,615.52x = 10,653,791,986.29
  5. Step 5: Solve for x
    x = 10,653,791,986.29/103,615.52
  6. Step 6: Final answer
    x = 102,820.43

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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.