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Finding the Fourth Proportional to 191,309.76, 263,936.16 and 119,662.56

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Solution

The fourth proportional to 191,309.76, 263,936.16 and 119,662.56 is: 165,089.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,309.76 : 263,936.16 = 119,662.56 : x
  2. Step 2: Convert to fraction form
    191,309.76/263,936.16 = 119,662.56/x
  3. Step 3: Cross multiply
    191,309.76x = 263,936.16 × 119,662.56
  4. Step 4: Simplify right side
    191,309.76x = 31,583,276,582.17
  5. Step 5: Solve for x
    x = 31,583,276,582.17/191,309.76
  6. Step 6: Final answer
    x = 165,089.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.