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Finding the Fourth Proportional to 181,765.73, 272,690.07 and 55,417.28

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Solution

The fourth proportional to 181,765.73, 272,690.07 and 55,417.28 is: 83,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,765.73 : 272,690.07 = 55,417.28 : x
  2. Step 2: Convert to fraction form
    181,765.73/272,690.07 = 55,417.28/x
  3. Step 3: Cross multiply
    181,765.73x = 272,690.07 × 55,417.28
  4. Step 4: Simplify right side
    181,765.73x = 15,111,740,391.14
  5. Step 5: Solve for x
    x = 15,111,740,391.14/181,765.73
  6. Step 6: Final answer
    x = 83,138.56

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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.