Home / 155,917.28-215,165.79-84,297.28

Finding the Fourth Proportional to 155,917.28, 215,165.79 and 84,297.28

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Solution

The fourth proportional to 155,917.28, 215,165.79 and 84,297.28 is: 116,330.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,917.28 : 215,165.79 = 84,297.28 : x
  2. Step 2: Convert to fraction form
    155,917.28/215,165.79 = 84,297.28/x
  3. Step 3: Cross multiply
    155,917.28x = 215,165.79 × 84,297.28
  4. Step 4: Simplify right side
    155,917.28x = 18,137,890,846.05
  5. Step 5: Solve for x
    x = 18,137,890,846.05/155,917.28
  6. Step 6: Final answer
    x = 116,330.22

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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.