Home / 131,746.80-197,159.40-120,687.60

Finding the Fourth Proportional to 131,746.80, 197,159.40 and 120,687.60

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Solution

The fourth proportional to 131,746.80, 197,159.40 and 120,687.60 is: 180,609.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,746.80 : 197,159.40 = 120,687.60 : x
  2. Step 2: Convert to fraction form
    131,746.80/197,159.40 = 120,687.60/x
  3. Step 3: Cross multiply
    131,746.80x = 197,159.40 × 120,687.60
  4. Step 4: Simplify right side
    131,746.80x = 23,794,694,803.44
  5. Step 5: Solve for x
    x = 23,794,694,803.44/131,746.80
  6. Step 6: Final answer
    x = 180,609.28

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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.