Home / 154,231.34-212,822.79-86,241.29

Finding the Fourth Proportional to 154,231.34, 212,822.79 and 86,241.29

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Solution

The fourth proportional to 154,231.34, 212,822.79 and 86,241.29 is: 119,003.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,231.34 : 212,822.79 = 86,241.29 : x
  2. Step 2: Convert to fraction form
    154,231.34/212,822.79 = 86,241.29/x
  3. Step 3: Cross multiply
    154,231.34x = 212,822.79 × 86,241.29
  4. Step 4: Simplify right side
    154,231.34x = 18,354,111,951.00
  5. Step 5: Solve for x
    x = 18,354,111,951.00/154,231.34
  6. Step 6: Final answer
    x = 119,003.78

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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.