Home / 98,634.40-147,878.70-54,311.20

Finding the Fourth Proportional to 98,634.40, 147,878.70 and 54,311.20

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Solution

The fourth proportional to 98,634.40, 147,878.70 and 54,311.20 is: 81,426.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,634.40 : 147,878.70 = 54,311.20 : x
  2. Step 2: Convert to fraction form
    98,634.40/147,878.70 = 54,311.20/x
  3. Step 3: Cross multiply
    98,634.40x = 147,878.70 × 54,311.20
  4. Step 4: Simplify right side
    98,634.40x = 8,031,469,651.44
  5. Step 5: Solve for x
    x = 8,031,469,651.44/98,634.40
  6. Step 6: Final answer
    x = 81,426.66

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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.