Home / 135,721.62-203,582.43-42,208.74

Finding the Fourth Proportional to 135,721.62, 203,582.43 and 42,208.74

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Solution

The fourth proportional to 135,721.62, 203,582.43 and 42,208.74 is: 63,313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,721.62 : 203,582.43 = 42,208.74 : x
  2. Step 2: Convert to fraction form
    135,721.62/203,582.43 = 42,208.74/x
  3. Step 3: Cross multiply
    135,721.62x = 203,582.43 × 42,208.74
  4. Step 4: Simplify right side
    135,721.62x = 8,592,957,856.44
  5. Step 5: Solve for x
    x = 8,592,957,856.44/135,721.62
  6. Step 6: Final answer
    x = 63,313.11

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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.