Home / 120,528.30-180,792.46-31,788.73

Finding the Fourth Proportional to 120,528.30, 180,792.46 and 31,788.73

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Solution

The fourth proportional to 120,528.30, 180,792.46 and 31,788.73 is: 47,683.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,528.30 : 180,792.46 = 31,788.73 : x
  2. Step 2: Convert to fraction form
    120,528.30/180,792.46 = 31,788.73/x
  3. Step 3: Cross multiply
    120,528.30x = 180,792.46 × 31,788.73
  4. Step 4: Simplify right side
    120,528.30x = 5,747,162,275.41
  5. Step 5: Solve for x
    x = 5,747,162,275.41/120,528.30
  6. Step 6: Final answer
    x = 47,683.09

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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.