Home / 106,520.45-159,628.37-78,218.46

Finding the Fourth Proportional to 106,520.45, 159,628.37 and 78,218.46

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Solution

The fourth proportional to 106,520.45, 159,628.37 and 78,218.46 is: 117,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,520.45 : 159,628.37 = 78,218.46 : x
  2. Step 2: Convert to fraction form
    106,520.45/159,628.37 = 78,218.46/x
  3. Step 3: Cross multiply
    106,520.45x = 159,628.37 × 78,218.46
  4. Step 4: Simplify right side
    106,520.45x = 12,485,884,882.62
  5. Step 5: Solve for x
    x = 12,485,884,882.62/106,520.45
  6. Step 6: Final answer
    x = 117,215.85

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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.