Home / 99,409.40-137,185.27-54,087.40

Finding the Fourth Proportional to 99,409.40, 137,185.27 and 54,087.40

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Solution

The fourth proportional to 99,409.40, 137,185.27 and 54,087.40 is: 74,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,409.40 : 137,185.27 = 54,087.40 : x
  2. Step 2: Convert to fraction form
    99,409.40/137,185.27 = 54,087.40/x
  3. Step 3: Cross multiply
    99,409.40x = 137,185.27 × 54,087.40
  4. Step 4: Simplify right side
    99,409.40x = 7,419,993,989.31
  5. Step 5: Solve for x
    x = 7,419,993,989.31/99,409.40
  6. Step 6: Final answer
    x = 74,640.77

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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.