Home / 155,905.62-215,149.08-84,285.60

Finding the Fourth Proportional to 155,905.62, 215,149.08 and 84,285.60

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Solution

The fourth proportional to 155,905.62, 215,149.08 and 84,285.60 is: 116,313.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,905.62 : 215,149.08 = 84,285.60 : x
  2. Step 2: Convert to fraction form
    155,905.62/215,149.08 = 84,285.60/x
  3. Step 3: Cross multiply
    155,905.62x = 215,149.08 × 84,285.60
  4. Step 4: Simplify right side
    155,905.62x = 18,133,969,297.25
  5. Step 5: Solve for x
    x = 18,133,969,297.25/155,905.62
  6. Step 6: Final answer
    x = 116,313.76

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1.5x scale

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.