Home / 138,734.44-191,453.86-75,072.92

Finding the Fourth Proportional to 138,734.44, 191,453.86 and 75,072.92

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Solution

The fourth proportional to 138,734.44, 191,453.86 and 75,072.92 is: 103,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,734.44 : 191,453.86 = 75,072.92 : x
  2. Step 2: Convert to fraction form
    138,734.44/191,453.86 = 75,072.92/x
  3. Step 3: Cross multiply
    138,734.44x = 191,453.86 × 75,072.92
  4. Step 4: Simplify right side
    138,734.44x = 14,373,000,315.47
  5. Step 5: Solve for x
    x = 14,373,000,315.47/138,734.44
  6. Step 6: Final answer
    x = 103,600.81

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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.