Home / 155,909.88-215,157.24-84,291.30

Finding the Fourth Proportional to 155,909.88, 215,157.24 and 84,291.30

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Solution

The fourth proportional to 155,909.88, 215,157.24 and 84,291.30 is: 116,322.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,909.88 : 215,157.24 = 84,291.30 : x
  2. Step 2: Convert to fraction form
    155,909.88/215,157.24 = 84,291.30/x
  3. Step 3: Cross multiply
    155,909.88x = 215,157.24 × 84,291.30
  4. Step 4: Simplify right side
    155,909.88x = 18,135,883,464.01
  5. Step 5: Solve for x
    x = 18,135,883,464.01/155,909.88
  6. Step 6: Final answer
    x = 116,322.86

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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.