Home / 215,901.32-323,532.13-87,661.66

Finding the Fourth Proportional to 215,901.32, 323,532.13 and 87,661.66

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Solution

The fourth proportional to 215,901.32, 323,532.13 and 87,661.66 is: 131,362.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,901.32 : 323,532.13 = 87,661.66 : x
  2. Step 2: Convert to fraction form
    215,901.32/323,532.13 = 87,661.66/x
  3. Step 3: Cross multiply
    215,901.32x = 323,532.13 × 87,661.66
  4. Step 4: Simplify right side
    215,901.32x = 28,361,363,579.14
  5. Step 5: Solve for x
    x = 28,361,363,579.14/215,901.32
  6. Step 6: Final answer
    x = 131,362.62

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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.