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Finding the Fourth Proportional to 190,345.68, 285,930.52 and 123,751.56

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Solution

The fourth proportional to 190,345.68, 285,930.52 and 123,751.56 is: 185,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,345.68 : 285,930.52 = 123,751.56 : x
  2. Step 2: Convert to fraction form
    190,345.68/285,930.52 = 123,751.56/x
  3. Step 3: Cross multiply
    190,345.68x = 285,930.52 × 123,751.56
  4. Step 4: Simplify right side
    190,345.68x = 35,384,347,901.61
  5. Step 5: Solve for x
    x = 35,384,347,901.61/190,345.68
  6. Step 6: Final answer
    x = 185,895.20

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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.