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Finding the Fourth Proportional to 121,326.88, 182,026.47 and 87,668.95

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Solution

The fourth proportional to 121,326.88, 182,026.47 and 87,668.95 is: 131,529.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,326.88 : 182,026.47 = 87,668.95 : x
  2. Step 2: Convert to fraction form
    121,326.88/182,026.47 = 87,668.95/x
  3. Step 3: Cross multiply
    121,326.88x = 182,026.47 × 87,668.95
  4. Step 4: Simplify right side
    121,326.88x = 15,958,069,497.11
  5. Step 5: Solve for x
    x = 15,958,069,497.11/121,326.88
  6. Step 6: Final answer
    x = 131,529.55

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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.