Home / 138,731.56-191,449.50-75,069.34

Finding the Fourth Proportional to 138,731.56, 191,449.50 and 75,069.34

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Solution

The fourth proportional to 138,731.56, 191,449.50 and 75,069.34 is: 103,595.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,731.56 : 191,449.50 = 75,069.34 : x
  2. Step 2: Convert to fraction form
    138,731.56/191,449.50 = 75,069.34/x
  3. Step 3: Cross multiply
    138,731.56x = 191,449.50 × 75,069.34
  4. Step 4: Simplify right side
    138,731.56x = 14,371,987,608.33
  5. Step 5: Solve for x
    x = 14,371,987,608.33/138,731.56
  6. Step 6: Final answer
    x = 103,595.66

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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.