Home / 136,103.54-187,810.04-78,733.67

Finding the Fourth Proportional to 136,103.54, 187,810.04 and 78,733.67

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Solution

The fourth proportional to 136,103.54, 187,810.04 and 78,733.67 is: 108,645.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,103.54 : 187,810.04 = 78,733.67 : x
  2. Step 2: Convert to fraction form
    136,103.54/187,810.04 = 78,733.67/x
  3. Step 3: Cross multiply
    136,103.54x = 187,810.04 × 78,733.67
  4. Step 4: Simplify right side
    136,103.54x = 14,786,972,379.33
  5. Step 5: Solve for x
    x = 14,786,972,379.33/136,103.54
  6. Step 6: Final answer
    x = 108,645.03

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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.