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Finding the Fourth Proportional to 181,287.60, 272,028.60 and 76,117.20

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Solution

The fourth proportional to 181,287.60, 272,028.60 and 76,117.20 is: 114,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,287.60 : 272,028.60 = 76,117.20 : x
  2. Step 2: Convert to fraction form
    181,287.60/272,028.60 = 76,117.20/x
  3. Step 3: Cross multiply
    181,287.60x = 272,028.60 × 76,117.20
  4. Step 4: Simplify right side
    181,287.60x = 20,706,055,351.92
  5. Step 5: Solve for x
    x = 20,706,055,351.92/181,287.60
  6. Step 6: Final answer
    x = 114,216.61

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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.