Home / 135,282.88-186,736.44-78,741.76

Finding the Fourth Proportional to 135,282.88, 186,736.44 and 78,741.76

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Solution

The fourth proportional to 135,282.88, 186,736.44 and 78,741.76 is: 108,690.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,282.88 : 186,736.44 = 78,741.76 : x
  2. Step 2: Convert to fraction form
    135,282.88/186,736.44 = 78,741.76/x
  3. Step 3: Cross multiply
    135,282.88x = 186,736.44 × 78,741.76
  4. Step 4: Simplify right side
    135,282.88x = 14,703,955,941.73
  5. Step 5: Solve for x
    x = 14,703,955,941.73/135,282.88
  6. Step 6: Final answer
    x = 108,690.44

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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.