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Finding the Fourth Proportional to 183,309.78, 274,964.70 and 72,501.78

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Solution

The fourth proportional to 183,309.78, 274,964.70 and 72,501.78 is: 108,752.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,309.78 : 274,964.70 = 72,501.78 : x
  2. Step 2: Convert to fraction form
    183,309.78/274,964.70 = 72,501.78/x
  3. Step 3: Cross multiply
    183,309.78x = 274,964.70 × 72,501.78
  4. Step 4: Simplify right side
    183,309.78x = 19,935,430,187.17
  5. Step 5: Solve for x
    x = 19,935,430,187.17/183,309.78
  6. Step 6: Final answer
    x = 108,752.68

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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.