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Finding the Fourth Proportional to 161,505.89, 242,080.42 and 66,683.79

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Solution

The fourth proportional to 161,505.89, 242,080.42 and 66,683.79 is: 99,952.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,505.89 : 242,080.42 = 66,683.79 : x
  2. Step 2: Convert to fraction form
    161,505.89/242,080.42 = 66,683.79/x
  3. Step 3: Cross multiply
    161,505.89x = 242,080.42 × 66,683.79
  4. Step 4: Simplify right side
    161,505.89x = 16,142,839,890.39
  5. Step 5: Solve for x
    x = 16,142,839,890.39/161,505.89
  6. Step 6: Final answer
    x = 99,952.02

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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.