Home / 137,977.09-190,424.17-76,729.39

Finding the Fourth Proportional to 137,977.09, 190,424.17 and 76,729.39

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Solution

The fourth proportional to 137,977.09, 190,424.17 and 76,729.39 is: 105,895.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,977.09 : 190,424.17 = 76,729.39 : x
  2. Step 2: Convert to fraction form
    137,977.09/190,424.17 = 76,729.39/x
  3. Step 3: Cross multiply
    137,977.09x = 190,424.17 × 76,729.39
  4. Step 4: Simplify right side
    137,977.09x = 14,611,129,069.59
  5. Step 5: Solve for x
    x = 14,611,129,069.59/137,977.09
  6. Step 6: Final answer
    x = 105,895.33

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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.