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Finding the Fourth Proportional to 121,488.52, 182,245.74 and 51,374.92

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Solution

The fourth proportional to 121,488.52, 182,245.74 and 51,374.92 is: 77,067.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,488.52 : 182,245.74 = 51,374.92 : x
  2. Step 2: Convert to fraction form
    121,488.52/182,245.74 = 51,374.92/x
  3. Step 3: Cross multiply
    121,488.52x = 182,245.74 × 51,374.92
  4. Step 4: Simplify right side
    121,488.52x = 9,362,860,312.84
  5. Step 5: Solve for x
    x = 9,362,860,312.84/121,488.52
  6. Step 6: Final answer
    x = 77,067.86

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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.