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Finding the Fourth Proportional to 135,895.76, 187,522.39 and 79,339.94

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Solution

The fourth proportional to 135,895.76, 187,522.39 and 79,339.94 is: 109,481.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,895.76 : 187,522.39 = 79,339.94 : x
  2. Step 2: Convert to fraction form
    135,895.76/187,522.39 = 79,339.94/x
  3. Step 3: Cross multiply
    135,895.76x = 187,522.39 × 79,339.94
  4. Step 4: Simplify right side
    135,895.76x = 14,878,015,036.03
  5. Step 5: Solve for x
    x = 14,878,015,036.03/135,895.76
  6. Step 6: Final answer
    x = 109,481.08

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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.