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Finding the Fourth Proportional to 120,998.40, 181,497.60 and 108,313.80

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Solution

The fourth proportional to 120,998.40, 181,497.60 and 108,313.80 is: 162,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,998.40 : 181,497.60 = 108,313.80 : x
  2. Step 2: Convert to fraction form
    120,998.40/181,497.60 = 108,313.80/x
  3. Step 3: Cross multiply
    120,998.40x = 181,497.60 × 108,313.80
  4. Step 4: Simplify right side
    120,998.40x = 19,658,694,746.88
  5. Step 5: Solve for x
    x = 19,658,694,746.88/120,998.40
  6. Step 6: Final answer
    x = 162,470.70

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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.