Home / 138,687.85-191,388.58-75,025.09

Finding the Fourth Proportional to 138,687.85, 191,388.58 and 75,025.09

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Solution

The fourth proportional to 138,687.85, 191,388.58 and 75,025.09 is: 103,534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,687.85 : 191,388.58 = 75,025.09 : x
  2. Step 2: Convert to fraction form
    138,687.85/191,388.58 = 75,025.09/x
  3. Step 3: Cross multiply
    138,687.85x = 191,388.58 × 75,025.09
  4. Step 4: Simplify right side
    138,687.85x = 14,358,945,439.47
  5. Step 5: Solve for x
    x = 14,358,945,439.47/138,687.85
  6. Step 6: Final answer
    x = 103,534.27

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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.