Home / 120,559.16-180,818.10-31,813.60

Finding the Fourth Proportional to 120,559.16, 180,818.10 and 31,813.60

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Solution

The fourth proportional to 120,559.16, 180,818.10 and 31,813.60 is: 47,714.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,559.16 : 180,818.10 = 31,813.60 : x
  2. Step 2: Convert to fraction form
    120,559.16/180,818.10 = 31,813.60/x
  3. Step 3: Cross multiply
    120,559.16x = 180,818.10 × 31,813.60
  4. Step 4: Simplify right side
    120,559.16x = 5,752,474,706.16
  5. Step 5: Solve for x
    x = 5,752,474,706.16/120,559.16
  6. Step 6: Final answer
    x = 47,714.95

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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.