Home / 138,736.32-191,456.63-75,074.12

Finding the Fourth Proportional to 138,736.32, 191,456.63 and 75,074.12

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Solution

The fourth proportional to 138,736.32, 191,456.63 and 75,074.12 is: 103,602.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,736.32 : 191,456.63 = 75,074.12 : x
  2. Step 2: Convert to fraction form
    138,736.32/191,456.63 = 75,074.12/x
  3. Step 3: Cross multiply
    138,736.32x = 191,456.63 × 75,074.12
  4. Step 4: Simplify right side
    138,736.32x = 14,373,438,015.42
  5. Step 5: Solve for x
    x = 14,373,438,015.42/138,736.32
  6. Step 6: Final answer
    x = 103,602.56

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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.