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Finding the Fourth Proportional to 138,713.96, 191,621.22 and 110,383.40

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Solution

The fourth proportional to 138,713.96, 191,621.22 and 110,383.40 is: 152,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,713.96 : 191,621.22 = 110,383.40 : x
  2. Step 2: Convert to fraction form
    138,713.96/191,621.22 = 110,383.40/x
  3. Step 3: Cross multiply
    138,713.96x = 191,621.22 × 110,383.40
  4. Step 4: Simplify right side
    138,713.96x = 21,151,801,775.75
  5. Step 5: Solve for x
    x = 21,151,801,775.75/138,713.96
  6. Step 6: Final answer
    x = 152,485.03

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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.