Home / 87,903-121,321.74-84,986.52

Finding the Fourth Proportional to 87,903, 121,321.74 and 84,986.52

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Solution

The fourth proportional to 87,903, 121,321.74 and 84,986.52 is: 117,296.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,903 : 121,321.74 = 84,986.52 : x
  2. Step 2: Convert to fraction form
    87,903/121,321.74 = 84,986.52/x
  3. Step 3: Cross multiply
    87,903x = 121,321.74 × 84,986.52
  4. Step 4: Simplify right side
    87,903x = 10,310,712,482.94
  5. Step 5: Solve for x
    x = 10,310,712,482.94/87,903
  6. Step 6: Final answer
    x = 117,296.48

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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.