Home / 135,857.08-187,440.66-79,228.36

Finding the Fourth Proportional to 135,857.08, 187,440.66 and 79,228.36

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Solution

The fourth proportional to 135,857.08, 187,440.66 and 79,228.36 is: 109,310.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,857.08 : 187,440.66 = 79,228.36 : x
  2. Step 2: Convert to fraction form
    135,857.08/187,440.66 = 79,228.36/x
  3. Step 3: Cross multiply
    135,857.08x = 187,440.66 × 79,228.36
  4. Step 4: Simplify right side
    135,857.08x = 14,850,616,089.12
  5. Step 5: Solve for x
    x = 14,850,616,089.12/135,857.08
  6. Step 6: Final answer
    x = 109,310.58

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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.