Home / 121,318.60-182,172.30-91,769.80

Finding the Fourth Proportional to 121,318.60, 182,172.30 and 91,769.80

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Solution

The fourth proportional to 121,318.60, 182,172.30 and 91,769.80 is: 137,801.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,318.60 : 182,172.30 = 91,769.80 : x
  2. Step 2: Convert to fraction form
    121,318.60/182,172.30 = 91,769.80/x
  3. Step 3: Cross multiply
    121,318.60x = 182,172.30 × 91,769.80
  4. Step 4: Simplify right side
    121,318.60x = 16,717,915,536.54
  5. Step 5: Solve for x
    x = 16,717,915,536.54/121,318.60
  6. Step 6: Final answer
    x = 137,801.75

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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.