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Finding the Fourth Proportional to 103,601.56, 155,402.31 and 68,533.02

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Solution

The fourth proportional to 103,601.56, 155,402.31 and 68,533.02 is: 102,799.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,601.56 : 155,402.31 = 68,533.02 : x
  2. Step 2: Convert to fraction form
    103,601.56/155,402.31 = 68,533.02/x
  3. Step 3: Cross multiply
    103,601.56x = 155,402.31 × 68,533.02
  4. Step 4: Simplify right side
    103,601.56x = 10,650,189,619.28
  5. Step 5: Solve for x
    x = 10,650,189,619.28/103,601.56
  6. Step 6: Final answer
    x = 102,799.51

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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.