Home / 102,686.20-154,029.30-74,473.90

Finding the Fourth Proportional to 102,686.20, 154,029.30 and 74,473.90

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Solution

The fourth proportional to 102,686.20, 154,029.30 and 74,473.90 is: 111,710.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,686.20 : 154,029.30 = 74,473.90 : x
  2. Step 2: Convert to fraction form
    102,686.20/154,029.30 = 74,473.90/x
  3. Step 3: Cross multiply
    102,686.20x = 154,029.30 × 74,473.90
  4. Step 4: Simplify right side
    102,686.20x = 11,471,162,685.27
  5. Step 5: Solve for x
    x = 11,471,162,685.27/102,686.20
  6. Step 6: Final answer
    x = 111,710.85

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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.