Home / 147,218.10-203,145.72-82,694.58

Finding the Fourth Proportional to 147,218.10, 203,145.72 and 82,694.58

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Solution

The fourth proportional to 147,218.10, 203,145.72 and 82,694.58 is: 114,109.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,218.10 : 203,145.72 = 82,694.58 : x
  2. Step 2: Convert to fraction form
    147,218.10/203,145.72 = 82,694.58/x
  3. Step 3: Cross multiply
    147,218.10x = 203,145.72 × 82,694.58
  4. Step 4: Simplify right side
    147,218.10x = 16,799,049,994.20
  5. Step 5: Solve for x
    x = 16,799,049,994.20/147,218.10
  6. Step 6: Final answer
    x = 114,109.95

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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.