Home / 135,449.87-186,922.22-81,724.50

Finding the Fourth Proportional to 135,449.87, 186,922.22 and 81,724.50

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Solution

The fourth proportional to 135,449.87, 186,922.22 and 81,724.50 is: 112,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,449.87 : 186,922.22 = 81,724.50 : x
  2. Step 2: Convert to fraction form
    135,449.87/186,922.22 = 81,724.50/x
  3. Step 3: Cross multiply
    135,449.87x = 186,922.22 × 81,724.50
  4. Step 4: Simplify right side
    135,449.87x = 15,276,124,559.77
  5. Step 5: Solve for x
    x = 15,276,124,559.77/135,449.87
  6. Step 6: Final answer
    x = 112,780.66

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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.