Home / 138,858.96-191,625.12-75,196.56

Finding the Fourth Proportional to 138,858.96, 191,625.12 and 75,196.56

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Solution

The fourth proportional to 138,858.96, 191,625.12 and 75,196.56 is: 103,771.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,858.96 : 191,625.12 = 75,196.56 : x
  2. Step 2: Convert to fraction form
    138,858.96/191,625.12 = 75,196.56/x
  3. Step 3: Cross multiply
    138,858.96x = 191,625.12 × 75,196.56
  4. Step 4: Simplify right side
    138,858.96x = 14,409,549,833.59
  5. Step 5: Solve for x
    x = 14,409,549,833.59/138,858.96
  6. Step 6: Final answer
    x = 103,771.12

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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.