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Finding the Fourth Proportional to 122,925,382.60, 169,634,978.98 and 67,169,578.12

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Solution

The fourth proportional to 122,925,382.60, 169,634,978.98 and 67,169,578.12 is: 92,692,898.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,925,382.60 : 169,634,978.98 = 67,169,578.12 : x
  2. Step 2: Convert to fraction form
    122,925,382.60/169,634,978.98 = 67,169,578.12/x
  3. Step 3: Cross multiply
    122,925,382.60x = 169,634,978.98 × 67,169,578.12
  4. Step 4: Simplify right side
    122,925,382.60x = 11,394,309,972,481,668
  5. Step 5: Solve for x
    x = 11,394,309,972,481,668/122,925,382.60
  6. Step 6: Final answer
    x = 92,692,898.18

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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.