Home / 128,800.25-193,319.27-92,814.06

Finding the Fourth Proportional to 128,800.25, 193,319.27 and 92,814.06

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Solution

The fourth proportional to 128,800.25, 193,319.27 and 92,814.06 is: 139,306.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,800.25 : 193,319.27 = 92,814.06 : x
  2. Step 2: Convert to fraction form
    128,800.25/193,319.27 = 92,814.06/x
  3. Step 3: Cross multiply
    128,800.25x = 193,319.27 × 92,814.06
  4. Step 4: Simplify right side
    128,800.25x = 17,942,746,324.94
  5. Step 5: Solve for x
    x = 17,942,746,324.94/128,800.25
  6. Step 6: Final answer
    x = 139,306.77

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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.