Home / 138,734.32-191,453.87-75,072.12

Finding the Fourth Proportional to 138,734.32, 191,453.87 and 75,072.12

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Solution

The fourth proportional to 138,734.32, 191,453.87 and 75,072.12 is: 103,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,734.32 : 191,453.87 = 75,072.12 : x
  2. Step 2: Convert to fraction form
    138,734.32/191,453.87 = 75,072.12/x
  3. Step 3: Cross multiply
    138,734.32x = 191,453.87 × 75,072.12
  4. Step 4: Simplify right side
    138,734.32x = 14,372,847,903.10
  5. Step 5: Solve for x
    x = 14,372,847,903.10/138,734.32
  6. Step 6: Final answer
    x = 103,599.80

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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.