Home / 215,095.76-322,709.28-109,988.56

Finding the Fourth Proportional to 215,095.76, 322,709.28 and 109,988.56

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Solution

The fourth proportional to 215,095.76, 322,709.28 and 109,988.56 is: 165,016.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,095.76 : 322,709.28 = 109,988.56 : x
  2. Step 2: Convert to fraction form
    215,095.76/322,709.28 = 109,988.56/x
  3. Step 3: Cross multiply
    215,095.76x = 322,709.28 × 109,988.56
  4. Step 4: Simplify right side
    215,095.76x = 35,494,329,005.84
  5. Step 5: Solve for x
    x = 35,494,329,005.84/215,095.76
  6. Step 6: Final answer
    x = 165,016.40

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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.