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Finding the Fourth Proportional to 121,514.58, 167,795.58 and 76,270.98

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Solution

The fourth proportional to 121,514.58, 167,795.58 and 76,270.98 is: 105,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,514.58 : 167,795.58 = 76,270.98 : x
  2. Step 2: Convert to fraction form
    121,514.58/167,795.58 = 76,270.98/x
  3. Step 3: Cross multiply
    121,514.58x = 167,795.58 × 76,270.98
  4. Step 4: Simplify right side
    121,514.58x = 12,797,933,326.27
  5. Step 5: Solve for x
    x = 12,797,933,326.27/121,514.58
  6. Step 6: Final answer
    x = 105,320.15

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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.