Home / 139,853.10-192,997.65-76,191.36

Finding the Fourth Proportional to 139,853.10, 192,997.65 and 76,191.36

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Solution

The fourth proportional to 139,853.10, 192,997.65 and 76,191.36 is: 105,144.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,853.10 : 192,997.65 = 76,191.36 : x
  2. Step 2: Convert to fraction form
    139,853.10/192,997.65 = 76,191.36/x
  3. Step 3: Cross multiply
    139,853.10x = 192,997.65 × 76,191.36
  4. Step 4: Simplify right side
    139,853.10x = 14,704,753,430.30
  5. Step 5: Solve for x
    x = 14,704,753,430.30/139,853.10
  6. Step 6: Final answer
    x = 105,144.28

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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.