Home / 128,049.80-191,829.90-68,865.80

Finding the Fourth Proportional to 128,049.80, 191,829.90 and 68,865.80

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Solution

The fourth proportional to 128,049.80, 191,829.90 and 68,865.80 is: 103,167.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,049.80 : 191,829.90 = 68,865.80 : x
  2. Step 2: Convert to fraction form
    128,049.80/191,829.90 = 68,865.80/x
  3. Step 3: Cross multiply
    128,049.80x = 191,829.90 × 68,865.80
  4. Step 4: Simplify right side
    128,049.80x = 13,210,519,527.42
  5. Step 5: Solve for x
    x = 13,210,519,527.42/128,049.80
  6. Step 6: Final answer
    x = 103,167.05

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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.