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Finding the Fourth Proportional to 181,534.80, 272,071.80 and 161,720.40

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Solution

The fourth proportional to 181,534.80, 272,071.80 and 161,720.40 is: 242,375.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,534.80 : 272,071.80 = 161,720.40 : x
  2. Step 2: Convert to fraction form
    181,534.80/272,071.80 = 161,720.40/x
  3. Step 3: Cross multiply
    181,534.80x = 272,071.80 × 161,720.40
  4. Step 4: Simplify right side
    181,534.80x = 43,999,560,324.72
  5. Step 5: Solve for x
    x = 43,999,560,324.72/181,534.80
  6. Step 6: Final answer
    x = 242,375.35

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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.