Home / 128,851.40-193,277.10-76,233.80

Finding the Fourth Proportional to 128,851.40, 193,277.10 and 76,233.80

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Solution

The fourth proportional to 128,851.40, 193,277.10 and 76,233.80 is: 114,350.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,851.40 : 193,277.10 = 76,233.80 : x
  2. Step 2: Convert to fraction form
    128,851.40/193,277.10 = 76,233.80/x
  3. Step 3: Cross multiply
    128,851.40x = 193,277.10 × 76,233.80
  4. Step 4: Simplify right side
    128,851.40x = 14,734,247,785.98
  5. Step 5: Solve for x
    x = 14,734,247,785.98/128,851.40
  6. Step 6: Final answer
    x = 114,350.70

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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.