Home / 135,645.39-187,181.51-75,213.81

Finding the Fourth Proportional to 135,645.39, 187,181.51 and 75,213.81

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Solution

The fourth proportional to 135,645.39, 187,181.51 and 75,213.81 is: 103,789.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,645.39 : 187,181.51 = 75,213.81 : x
  2. Step 2: Convert to fraction form
    135,645.39/187,181.51 = 75,213.81/x
  3. Step 3: Cross multiply
    135,645.39x = 187,181.51 × 75,213.81
  4. Step 4: Simplify right side
    135,645.39x = 14,078,634,152.58
  5. Step 5: Solve for x
    x = 14,078,634,152.58/135,645.39
  6. Step 6: Final answer
    x = 103,789.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.