Home / 138,861.09-191,627.82-75,199.05

Finding the Fourth Proportional to 138,861.09, 191,627.82 and 75,199.05

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Solution

The fourth proportional to 138,861.09, 191,627.82 and 75,199.05 is: 103,774.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,861.09 : 191,627.82 = 75,199.05 : x
  2. Step 2: Convert to fraction form
    138,861.09/191,627.82 = 75,199.05/x
  3. Step 3: Cross multiply
    138,861.09x = 191,627.82 × 75,199.05
  4. Step 4: Simplify right side
    138,861.09x = 14,410,230,017.57
  5. Step 5: Solve for x
    x = 14,410,230,017.57/138,861.09
  6. Step 6: Final answer
    x = 103,774.43

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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.