Home / 151,989.12-209,738.43-84,002.58

Finding the Fourth Proportional to 151,989.12, 209,738.43 and 84,002.58

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Solution

The fourth proportional to 151,989.12, 209,738.43 and 84,002.58 is: 115,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,989.12 : 209,738.43 = 84,002.58 : x
  2. Step 2: Convert to fraction form
    151,989.12/209,738.43 = 84,002.58/x
  3. Step 3: Cross multiply
    151,989.12x = 209,738.43 × 84,002.58
  4. Step 4: Simplify right side
    151,989.12x = 17,618,569,245.15
  5. Step 5: Solve for x
    x = 17,618,569,245.15/151,989.12
  6. Step 6: Final answer
    x = 115,919.94

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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.