Home / 215,639.34-323,101.38-131,143.92

Finding the Fourth Proportional to 215,639.34, 323,101.38 and 131,143.92

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Solution

The fourth proportional to 215,639.34, 323,101.38 and 131,143.92 is: 196,498.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,639.34 : 323,101.38 = 131,143.92 : x
  2. Step 2: Convert to fraction form
    215,639.34/323,101.38 = 131,143.92/x
  3. Step 3: Cross multiply
    215,639.34x = 323,101.38 × 131,143.92
  4. Step 4: Simplify right side
    215,639.34x = 42,372,781,530.61
  5. Step 5: Solve for x
    x = 42,372,781,530.61/215,639.34
  6. Step 6: Final answer
    x = 196,498.38

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1.5x scale

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.