Home / 155,939.70-215,187.87-87,952.62

Finding the Fourth Proportional to 155,939.70, 215,187.87 and 87,952.62

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Solution

The fourth proportional to 155,939.70, 215,187.87 and 87,952.62 is: 121,369.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,939.70 : 215,187.87 = 87,952.62 : x
  2. Step 2: Convert to fraction form
    155,939.70/215,187.87 = 87,952.62/x
  3. Step 3: Cross multiply
    155,939.70x = 215,187.87 × 87,952.62
  4. Step 4: Simplify right side
    155,939.70x = 18,926,336,628.90
  5. Step 5: Solve for x
    x = 18,926,336,628.90/155,939.70
  6. Step 6: Final answer
    x = 121,369.58

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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.