Home / 154,923.90-213,761.79-101,287.68

Finding the Fourth Proportional to 154,923.90, 213,761.79 and 101,287.68

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Solution

The fourth proportional to 154,923.90, 213,761.79 and 101,287.68 is: 139,755.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,923.90 : 213,761.79 = 101,287.68 : x
  2. Step 2: Convert to fraction form
    154,923.90/213,761.79 = 101,287.68/x
  3. Step 3: Cross multiply
    154,923.90x = 213,761.79 × 101,287.68
  4. Step 4: Simplify right side
    154,923.90x = 21,651,435,781.75
  5. Step 5: Solve for x
    x = 21,651,435,781.75/154,923.90
  6. Step 6: Final answer
    x = 139,755.30

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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.