Home / 138,861.10-191,629.02-75,199.15

Finding the Fourth Proportional to 138,861.10, 191,629.02 and 75,199.15

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Solution

The fourth proportional to 138,861.10, 191,629.02 and 75,199.15 is: 103,775.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,861.10 : 191,629.02 = 75,199.15 : x
  2. Step 2: Convert to fraction form
    138,861.10/191,629.02 = 75,199.15/x
  3. Step 3: Cross multiply
    138,861.10x = 191,629.02 × 75,199.15
  4. Step 4: Simplify right side
    138,861.10x = 14,410,339,419.33
  5. Step 5: Solve for x
    x = 14,410,339,419.33/138,861.10
  6. Step 6: Final answer
    x = 103,775.21

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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.