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Finding the Fourth Proportional to 181,520.40, 272,345.40 and 76,371.60

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Solution

The fourth proportional to 181,520.40, 272,345.40 and 76,371.60 is: 114,584.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,520.40 : 272,345.40 = 76,371.60 : x
  2. Step 2: Convert to fraction form
    181,520.40/272,345.40 = 76,371.60/x
  3. Step 3: Cross multiply
    181,520.40x = 272,345.40 × 76,371.60
  4. Step 4: Simplify right side
    181,520.40x = 20,799,453,950.64
  5. Step 5: Solve for x
    x = 20,799,453,950.64/181,520.40
  6. Step 6: Final answer
    x = 114,584.66

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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.