Home / 139,863.45-193,013.78-76,201.23

Finding the Fourth Proportional to 139,863.45, 193,013.78 and 76,201.23

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Solution

The fourth proportional to 139,863.45, 193,013.78 and 76,201.23 is: 105,158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,863.45 : 193,013.78 = 76,201.23 : x
  2. Step 2: Convert to fraction form
    139,863.45/193,013.78 = 76,201.23/x
  3. Step 3: Cross multiply
    139,863.45x = 193,013.78 × 76,201.23
  4. Step 4: Simplify right side
    139,863.45x = 14,707,887,061.94
  5. Step 5: Solve for x
    x = 14,707,887,061.94/139,863.45
  6. Step 6: Final answer
    x = 105,158.90

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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.