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Finding the Fourth Proportional to 121,374.35, 182,099.19 and 108,815.30

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Solution

The fourth proportional to 121,374.35, 182,099.19 and 108,815.30 is: 163,256.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,374.35 : 182,099.19 = 108,815.30 : x
  2. Step 2: Convert to fraction form
    121,374.35/182,099.19 = 108,815.30/x
  3. Step 3: Cross multiply
    121,374.35x = 182,099.19 × 108,815.30
  4. Step 4: Simplify right side
    121,374.35x = 19,815,177,079.11
  5. Step 5: Solve for x
    x = 19,815,177,079.11/121,374.35
  6. Step 6: Final answer
    x = 163,256.72

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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.