Home / 215,903.32-323,535.13-87,663.66

Finding the Fourth Proportional to 215,903.32, 323,535.13 and 87,663.66

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Solution

The fourth proportional to 215,903.32, 323,535.13 and 87,663.66 is: 131,365.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,903.32 : 323,535.13 = 87,663.66 : x
  2. Step 2: Convert to fraction form
    215,903.32/323,535.13 = 87,663.66/x
  3. Step 3: Cross multiply
    215,903.32x = 323,535.13 × 87,663.66
  4. Step 4: Simplify right side
    215,903.32x = 28,362,273,634.38
  5. Step 5: Solve for x
    x = 28,362,273,634.38/215,903.32
  6. Step 6: Final answer
    x = 131,365.62

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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.