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Finding the Fourth Proportional to 161,768.88, 242,505.48 and 136,968.72

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Solution

The fourth proportional to 161,768.88, 242,505.48 and 136,968.72 is: 205,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,768.88 : 242,505.48 = 136,968.72 : x
  2. Step 2: Convert to fraction form
    161,768.88/242,505.48 = 136,968.72/x
  3. Step 3: Cross multiply
    161,768.88x = 242,505.48 × 136,968.72
  4. Step 4: Simplify right side
    161,768.88x = 33,215,665,188.59
  5. Step 5: Solve for x
    x = 33,215,665,188.59/161,768.88
  6. Step 6: Final answer
    x = 205,327.90

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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.