Home / 135,645.05-187,199.76-75,221.48

Finding the Fourth Proportional to 135,645.05, 187,199.76 and 75,221.48

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Solution

The fourth proportional to 135,645.05, 187,199.76 and 75,221.48 is: 103,810.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,645.05 : 187,199.76 = 75,221.48 : x
  2. Step 2: Convert to fraction form
    135,645.05/187,199.76 = 75,221.48/x
  3. Step 3: Cross multiply
    135,645.05x = 187,199.76 × 75,221.48
  4. Step 4: Simplify right side
    135,645.05x = 14,081,443,002.84
  5. Step 5: Solve for x
    x = 14,081,443,002.84/135,645.05
  6. Step 6: Final answer
    x = 103,810.96

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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.