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Finding the Fourth Proportional to 181,704.40, 272,605.20 and 129,216.40

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Solution

The fourth proportional to 181,704.40, 272,605.20 and 129,216.40 is: 193,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,704.40 : 272,605.20 = 129,216.40 : x
  2. Step 2: Convert to fraction form
    181,704.40/272,605.20 = 129,216.40/x
  3. Step 3: Cross multiply
    181,704.40x = 272,605.20 × 129,216.40
  4. Step 4: Simplify right side
    181,704.40x = 35,225,062,565.28
  5. Step 5: Solve for x
    x = 35,225,062,565.28/181,704.40
  6. Step 6: Final answer
    x = 193,859.16

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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.