Home / 155,955.36-215,231.16-87,968.88

Finding the Fourth Proportional to 155,955.36, 215,231.16 and 87,968.88

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Solution

The fourth proportional to 155,955.36, 215,231.16 and 87,968.88 is: 121,404.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,955.36 : 215,231.16 = 87,968.88 : x
  2. Step 2: Convert to fraction form
    155,955.36/215,231.16 = 87,968.88/x
  3. Step 3: Cross multiply
    155,955.36x = 215,231.16 × 87,968.88
  4. Step 4: Simplify right side
    155,955.36x = 18,933,644,086.30
  5. Step 5: Solve for x
    x = 18,933,644,086.30/155,955.36
  6. Step 6: Final answer
    x = 121,404.25

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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.