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Finding the Fourth Proportional to 136,804.69, 205,278.09 and 103,514.86

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Solution

The fourth proportional to 136,804.69, 205,278.09 and 103,514.86 is: 155,326.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,804.69 : 205,278.09 = 103,514.86 : x
  2. Step 2: Convert to fraction form
    136,804.69/205,278.09 = 103,514.86/x
  3. Step 3: Cross multiply
    136,804.69x = 205,278.09 × 103,514.86
  4. Step 4: Simplify right side
    136,804.69x = 21,249,332,747.42
  5. Step 5: Solve for x
    x = 21,249,332,747.42/136,804.69
  6. Step 6: Final answer
    x = 155,326.05

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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.