Home / 127,821.80-191,732.70-80,582.60

Finding the Fourth Proportional to 127,821.80, 191,732.70 and 80,582.60

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Solution

The fourth proportional to 127,821.80, 191,732.70 and 80,582.60 is: 120,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,821.80 : 191,732.70 = 80,582.60 : x
  2. Step 2: Convert to fraction form
    127,821.80/191,732.70 = 80,582.60/x
  3. Step 3: Cross multiply
    127,821.80x = 191,732.70 × 80,582.60
  4. Step 4: Simplify right side
    127,821.80x = 15,450,319,471.02
  5. Step 5: Solve for x
    x = 15,450,319,471.02/127,821.80
  6. Step 6: Final answer
    x = 120,873.90

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1.5x scale

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.