Home / 155,979.43-215,233.41-87,997.48

Finding the Fourth Proportional to 155,979.43, 215,233.41 and 87,997.48

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Solution

The fourth proportional to 155,979.43, 215,233.41 and 87,997.48 is: 121,426.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,979.43 : 215,233.41 = 87,997.48 : x
  2. Step 2: Convert to fraction form
    155,979.43/215,233.41 = 87,997.48/x
  3. Step 3: Cross multiply
    155,979.43x = 215,233.41 × 87,997.48
  4. Step 4: Simplify right side
    155,979.43x = 18,939,997,691.81
  5. Step 5: Solve for x
    x = 18,939,997,691.81/155,979.43
  6. Step 6: Final answer
    x = 121,426.25

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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.