Home / 131,739.80-197,148.90-120,680.60

Finding the Fourth Proportional to 131,739.80, 197,148.90 and 120,680.60

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Solution

The fourth proportional to 131,739.80, 197,148.90 and 120,680.60 is: 180,598.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,739.80 : 197,148.90 = 120,680.60 : x
  2. Step 2: Convert to fraction form
    131,739.80/197,148.90 = 120,680.60/x
  3. Step 3: Cross multiply
    131,739.80x = 197,148.90 × 120,680.60
  4. Step 4: Simplify right side
    131,739.80x = 23,792,047,541.34
  5. Step 5: Solve for x
    x = 23,792,047,541.34/131,739.80
  6. Step 6: Final answer
    x = 180,598.78

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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.