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Finding the Fourth Proportional to 192,379.38, 265,345.83 and 135,031.53

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Solution

The fourth proportional to 192,379.38, 265,345.83 and 135,031.53 is: 186,246.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,379.38 : 265,345.83 = 135,031.53 : x
  2. Step 2: Convert to fraction form
    192,379.38/265,345.83 = 135,031.53/x
  3. Step 3: Cross multiply
    192,379.38x = 265,345.83 × 135,031.53
  4. Step 4: Simplify right side
    192,379.38x = 35,830,053,404.02
  5. Step 5: Solve for x
    x = 35,830,053,404.02/192,379.38
  6. Step 6: Final answer
    x = 186,246.85

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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.