Home / 135,449.98-186,922.35-81,724.61

Finding the Fourth Proportional to 135,449.98, 186,922.35 and 81,724.61

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Solution

The fourth proportional to 135,449.98, 186,922.35 and 81,724.61 is: 112,780.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,449.98 : 186,922.35 = 81,724.61 : x
  2. Step 2: Convert to fraction form
    135,449.98/186,922.35 = 81,724.61/x
  3. Step 3: Cross multiply
    135,449.98x = 186,922.35 × 81,724.61
  4. Step 4: Simplify right side
    135,449.98x = 15,276,156,154.03
  5. Step 5: Solve for x
    x = 15,276,156,154.03/135,449.98
  6. Step 6: Final answer
    x = 112,780.79

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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.