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Finding the Fourth Proportional to 135,958.69, 187,570.65 and 100,233.64

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Solution

The fourth proportional to 135,958.69, 187,570.65 and 100,233.64 is: 138,283.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,958.69 : 187,570.65 = 100,233.64 : x
  2. Step 2: Convert to fraction form
    135,958.69/187,570.65 = 100,233.64/x
  3. Step 3: Cross multiply
    135,958.69x = 187,570.65 × 100,233.64
  4. Step 4: Simplify right side
    135,958.69x = 18,800,889,006.67
  5. Step 5: Solve for x
    x = 18,800,889,006.67/135,958.69
  6. Step 6: Final answer
    x = 138,283.83

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1.5x scale

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.