Home / 131,629.64-197,319.90-81,059.74

Finding the Fourth Proportional to 131,629.64, 197,319.90 and 81,059.74

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Solution

The fourth proportional to 131,629.64, 197,319.90 and 81,059.74 is: 121,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,629.64 : 197,319.90 = 81,059.74 : x
  2. Step 2: Convert to fraction form
    131,629.64/197,319.90 = 81,059.74/x
  3. Step 3: Cross multiply
    131,629.64x = 197,319.90 × 81,059.74
  4. Step 4: Simplify right side
    131,629.64x = 15,994,699,790.83
  5. Step 5: Solve for x
    x = 15,994,699,790.83/131,629.64
  6. Step 6: Final answer
    x = 121,512.90

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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.