Home / 137,806.84-190,171.02-77,377.96

Finding the Fourth Proportional to 137,806.84, 190,171.02 and 77,377.96

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Solution

The fourth proportional to 137,806.84, 190,171.02 and 77,377.96 is: 106,780.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,806.84 : 190,171.02 = 77,377.96 : x
  2. Step 2: Convert to fraction form
    137,806.84/190,171.02 = 77,377.96/x
  3. Step 3: Cross multiply
    137,806.84x = 190,171.02 × 77,377.96
  4. Step 4: Simplify right side
    137,806.84x = 14,715,045,578.72
  5. Step 5: Solve for x
    x = 14,715,045,578.72/137,806.84
  6. Step 6: Final answer
    x = 106,780.23

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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.