Home / 137,977.59-190,424.86-76,729.89

Finding the Fourth Proportional to 137,977.59, 190,424.86 and 76,729.89

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Solution

The fourth proportional to 137,977.59, 190,424.86 and 76,729.89 is: 105,896.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,977.59 : 190,424.86 = 76,729.89 : x
  2. Step 2: Convert to fraction form
    137,977.59/190,424.86 = 76,729.89/x
  3. Step 3: Cross multiply
    137,977.59x = 190,424.86 × 76,729.89
  4. Step 4: Simplify right side
    137,977.59x = 14,611,278,561.07
  5. Step 5: Solve for x
    x = 14,611,278,561.07/137,977.59
  6. Step 6: Final answer
    x = 105,896.03

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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.