Home / 99,507.25-137,318.04-54,185.79

Finding the Fourth Proportional to 99,507.25, 137,318.04 and 54,185.79

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Solution

The fourth proportional to 99,507.25, 137,318.04 and 54,185.79 is: 74,775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,507.25 : 137,318.04 = 54,185.79 : x
  2. Step 2: Convert to fraction form
    99,507.25/137,318.04 = 54,185.79/x
  3. Step 3: Cross multiply
    99,507.25x = 137,318.04 × 54,185.79
  4. Step 4: Simplify right side
    99,507.25x = 7,440,686,478.65
  5. Step 5: Solve for x
    x = 7,440,686,478.65/99,507.25
  6. Step 6: Final answer
    x = 74,775.32

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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.