Home / 136,209.06-187,970.67-75,780.41

Finding the Fourth Proportional to 136,209.06, 187,970.67 and 75,780.41

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Solution

The fourth proportional to 136,209.06, 187,970.67 and 75,780.41 is: 104,578.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,209.06 : 187,970.67 = 75,780.41 : x
  2. Step 2: Convert to fraction form
    136,209.06/187,970.67 = 75,780.41/x
  3. Step 3: Cross multiply
    136,209.06x = 187,970.67 × 75,780.41
  4. Step 4: Simplify right side
    136,209.06x = 14,244,493,500.72
  5. Step 5: Solve for x
    x = 14,244,493,500.72/136,209.06
  6. Step 6: Final answer
    x = 104,578.16

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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.