Home / 135,824.32-187,446.66-78,474.79

Finding the Fourth Proportional to 135,824.32, 187,446.66 and 78,474.79

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Solution

The fourth proportional to 135,824.32, 187,446.66 and 78,474.79 is: 108,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,824.32 : 187,446.66 = 78,474.79 : x
  2. Step 2: Convert to fraction form
    135,824.32/187,446.66 = 78,474.79/x
  3. Step 3: Cross multiply
    135,824.32x = 187,446.66 × 78,474.79
  4. Step 4: Simplify right side
    135,824.32x = 14,709,837,279.70
  5. Step 5: Solve for x
    x = 14,709,837,279.70/135,824.32
  6. Step 6: Final answer
    x = 108,300.47

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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.