Home / 154,747.72-213,645-101,122.48

Finding the Fourth Proportional to 154,747.72, 213,645 and 101,122.48

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Solution

The fourth proportional to 154,747.72, 213,645 and 101,122.48 is: 139,609.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,747.72 : 213,645 = 101,122.48 : x
  2. Step 2: Convert to fraction form
    154,747.72/213,645 = 101,122.48/x
  3. Step 3: Cross multiply
    154,747.72x = 213,645 × 101,122.48
  4. Step 4: Simplify right side
    154,747.72x = 21,604,312,239.60
  5. Step 5: Solve for x
    x = 21,604,312,239.60/154,747.72
  6. Step 6: Final answer
    x = 139,609.89

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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.