Home / 155,974.40-215,243.97-84,354.47

Finding the Fourth Proportional to 155,974.40, 215,243.97 and 84,354.47

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Solution

The fourth proportional to 155,974.40, 215,243.97 and 84,354.47 is: 116,408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,974.40 : 215,243.97 = 84,354.47 : x
  2. Step 2: Convert to fraction form
    155,974.40/215,243.97 = 84,354.47/x
  3. Step 3: Cross multiply
    155,974.40x = 215,243.97 × 84,354.47
  4. Step 4: Simplify right side
    155,974.40x = 18,156,791,010.05
  5. Step 5: Solve for x
    x = 18,156,791,010.05/155,974.40
  6. Step 6: Final answer
    x = 116,408.79

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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.