Home / 134,711.11-185,965.10-78,101.83

Finding the Fourth Proportional to 134,711.11, 185,965.10 and 78,101.83

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Solution

The fourth proportional to 134,711.11, 185,965.10 and 78,101.83 is: 107,817.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,711.11 : 185,965.10 = 78,101.83 : x
  2. Step 2: Convert to fraction form
    134,711.11/185,965.10 = 78,101.83/x
  3. Step 3: Cross multiply
    134,711.11x = 185,965.10 × 78,101.83
  4. Step 4: Simplify right side
    134,711.11x = 14,524,214,626.13
  5. Step 5: Solve for x
    x = 14,524,214,626.13/134,711.11
  6. Step 6: Final answer
    x = 107,817.50

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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.