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Finding the Fourth Proportional to 161,814.56, 242,721.60 and 43,485.90

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Solution

The fourth proportional to 161,814.56, 242,721.60 and 43,485.90 is: 65,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,814.56 : 242,721.60 = 43,485.90 : x
  2. Step 2: Convert to fraction form
    161,814.56/242,721.60 = 43,485.90/x
  3. Step 3: Cross multiply
    161,814.56x = 242,721.60 × 43,485.90
  4. Step 4: Simplify right side
    161,814.56x = 10,554,967,225.44
  5. Step 5: Solve for x
    x = 10,554,967,225.44/161,814.56
  6. Step 6: Final answer
    x = 65,228.79

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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.