Home / 155,939.75-215,196.71-84,319.60

Finding the Fourth Proportional to 155,939.75, 215,196.71 and 84,319.60

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Solution

The fourth proportional to 155,939.75, 215,196.71 and 84,319.60 is: 116,360.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,939.75 : 215,196.71 = 84,319.60 : x
  2. Step 2: Convert to fraction form
    155,939.75/215,196.71 = 84,319.60/x
  3. Step 3: Cross multiply
    155,939.75x = 215,196.71 × 84,319.60
  4. Step 4: Simplify right side
    155,939.75x = 18,145,300,086.92
  5. Step 5: Solve for x
    x = 18,145,300,086.92/155,939.75
  6. Step 6: Final answer
    x = 116,360.97

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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.