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Finding the Fourth Proportional to 181,564.40, 272,079.30 and 131,749.40

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Solution

The fourth proportional to 181,564.40, 272,079.30 and 131,749.40 is: 197,430.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,564.40 : 272,079.30 = 131,749.40 : x
  2. Step 2: Convert to fraction form
    181,564.40/272,079.30 = 131,749.40/x
  3. Step 3: Cross multiply
    181,564.40x = 272,079.30 × 131,749.40
  4. Step 4: Simplify right side
    181,564.40x = 35,846,284,527.42
  5. Step 5: Solve for x
    x = 35,846,284,527.42/181,564.40
  6. Step 6: Final answer
    x = 197,430.14

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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.