Home / 91,087.04-135,725.04-81,149.96

Finding the Fourth Proportional to 91,087.04, 135,725.04 and 81,149.96

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Solution

The fourth proportional to 91,087.04, 135,725.04 and 81,149.96 is: 120,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,087.04 : 135,725.04 = 81,149.96 : x
  2. Step 2: Convert to fraction form
    91,087.04/135,725.04 = 81,149.96/x
  3. Step 3: Cross multiply
    91,087.04x = 135,725.04 × 81,149.96
  4. Step 4: Simplify right side
    91,087.04x = 11,014,081,567.00
  5. Step 5: Solve for x
    x = 11,014,081,567.00/91,087.04
  6. Step 6: Final answer
    x = 120,918.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.