Home / 91,577.09-137,640.83-75,885.36

Finding the Fourth Proportional to 91,577.09, 137,640.83 and 75,885.36

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Solution

The fourth proportional to 91,577.09, 137,640.83 and 75,885.36 is: 114,056.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,577.09 : 137,640.83 = 75,885.36 : x
  2. Step 2: Convert to fraction form
    91,577.09/137,640.83 = 75,885.36/x
  3. Step 3: Cross multiply
    91,577.09x = 137,640.83 × 75,885.36
  4. Step 4: Simplify right side
    91,577.09x = 10,444,923,555.82
  5. Step 5: Solve for x
    x = 10,444,923,555.82/91,577.09
  6. Step 6: Final answer
    x = 114,056.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.