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Finding the Fourth Proportional to 179,808.60, 269,615.70 and 74,638.20

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Solution

The fourth proportional to 179,808.60, 269,615.70 and 74,638.20 is: 111,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,808.60 : 269,615.70 = 74,638.20 : x
  2. Step 2: Convert to fraction form
    179,808.60/269,615.70 = 74,638.20/x
  3. Step 3: Cross multiply
    179,808.60x = 269,615.70 × 74,638.20
  4. Step 4: Simplify right side
    179,808.60x = 20,123,630,539.74
  5. Step 5: Solve for x
    x = 20,123,630,539.74/179,808.60
  6. Step 6: Final answer
    x = 111,916.95

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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.