Home / 99,438.53-137,231.30-57,003.44

Finding the Fourth Proportional to 99,438.53, 137,231.30 and 57,003.44

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Solution

The fourth proportional to 99,438.53, 137,231.30 and 57,003.44 is: 78,668.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,438.53 : 137,231.30 = 57,003.44 : x
  2. Step 2: Convert to fraction form
    99,438.53/137,231.30 = 57,003.44/x
  3. Step 3: Cross multiply
    99,438.53x = 137,231.30 × 57,003.44
  4. Step 4: Simplify right side
    99,438.53x = 7,822,655,890.65
  5. Step 5: Solve for x
    x = 7,822,655,890.65/99,438.53
  6. Step 6: Final answer
    x = 78,668.26

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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.