Home / 109,083.75-163,628.40-30,198.66

Finding the Fourth Proportional to 109,083.75, 163,628.40 and 30,198.66

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Solution

The fourth proportional to 109,083.75, 163,628.40 and 30,198.66 is: 45,298.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,083.75 : 163,628.40 = 30,198.66 : x
  2. Step 2: Convert to fraction form
    109,083.75/163,628.40 = 30,198.66/x
  3. Step 3: Cross multiply
    109,083.75x = 163,628.40 × 30,198.66
  4. Step 4: Simplify right side
    109,083.75x = 4,941,358,417.94
  5. Step 5: Solve for x
    x = 4,941,358,417.94/109,083.75
  6. Step 6: Final answer
    x = 45,298.76

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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.