Home / 123,830.72-170,883.10-70,120.83

Finding the Fourth Proportional to 123,830.72, 170,883.10 and 70,120.83

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Solution

The fourth proportional to 123,830.72, 170,883.10 and 70,120.83 is: 96,764.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,830.72 : 170,883.10 = 70,120.83 : x
  2. Step 2: Convert to fraction form
    123,830.72/170,883.10 = 70,120.83/x
  3. Step 3: Cross multiply
    123,830.72x = 170,883.10 × 70,120.83
  4. Step 4: Simplify right side
    123,830.72x = 11,982,464,804.97
  5. Step 5: Solve for x
    x = 11,982,464,804.97/123,830.72
  6. Step 6: Final answer
    x = 96,764.88

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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.