Home / 140,099.68-193,338.20-76,438.80

Finding the Fourth Proportional to 140,099.68, 193,338.20 and 76,438.80

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Solution

The fourth proportional to 140,099.68, 193,338.20 and 76,438.80 is: 105,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,099.68 : 193,338.20 = 76,438.80 : x
  2. Step 2: Convert to fraction form
    140,099.68/193,338.20 = 76,438.80/x
  3. Step 3: Cross multiply
    140,099.68x = 193,338.20 × 76,438.80
  4. Step 4: Simplify right side
    140,099.68x = 14,778,540,002.16
  5. Step 5: Solve for x
    x = 14,778,540,002.16/140,099.68
  6. Step 6: Final answer
    x = 105,485.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.