Home / 135,788.52-203,682.78-72,416.65

Finding the Fourth Proportional to 135,788.52, 203,682.78 and 72,416.65

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Solution

The fourth proportional to 135,788.52, 203,682.78 and 72,416.65 is: 108,624.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,788.52 : 203,682.78 = 72,416.65 : x
  2. Step 2: Convert to fraction form
    135,788.52/203,682.78 = 72,416.65/x
  3. Step 3: Cross multiply
    135,788.52x = 203,682.78 × 72,416.65
  4. Step 4: Simplify right side
    135,788.52x = 14,750,024,666.66
  5. Step 5: Solve for x
    x = 14,750,024,666.66/135,788.52
  6. Step 6: Final answer
    x = 108,624.97

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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.