Home / 106,382.12-145,742.91-102,393.68

Finding the Fourth Proportional to 106,382.12, 145,742.91 and 102,393.68

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Solution

The fourth proportional to 106,382.12, 145,742.91 and 102,393.68 is: 140,278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,382.12 : 145,742.91 = 102,393.68 : x
  2. Step 2: Convert to fraction form
    106,382.12/145,742.91 = 102,393.68/x
  3. Step 3: Cross multiply
    106,382.12x = 145,742.91 × 102,393.68
  4. Step 4: Simplify right side
    106,382.12x = 14,923,152,376.84
  5. Step 5: Solve for x
    x = 14,923,152,376.84/106,382.12
  6. Step 6: Final answer
    x = 140,278.76

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.