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Finding the Fourth Proportional to 135,768.92, 187,360.72 and 75,348.68

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Solution

The fourth proportional to 135,768.92, 187,360.72 and 75,348.68 is: 103,980.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,768.92 : 187,360.72 = 75,348.68 : x
  2. Step 2: Convert to fraction form
    135,768.92/187,360.72 = 75,348.68/x
  3. Step 3: Cross multiply
    135,768.92x = 187,360.72 × 75,348.68
  4. Step 4: Simplify right side
    135,768.92x = 14,117,382,935.85
  5. Step 5: Solve for x
    x = 14,117,382,935.85/135,768.92
  6. Step 6: Final answer
    x = 103,980.96

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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.