Home / 156,078.88-215,388.60-88,110.16

Finding the Fourth Proportional to 156,078.88, 215,388.60 and 88,110.16

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Solution

The fourth proportional to 156,078.88, 215,388.60 and 88,110.16 is: 121,591.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,078.88 : 215,388.60 = 88,110.16 : x
  2. Step 2: Convert to fraction form
    156,078.88/215,388.60 = 88,110.16/x
  3. Step 3: Cross multiply
    156,078.88x = 215,388.60 × 88,110.16
  4. Step 4: Simplify right side
    156,078.88x = 18,977,924,008.18
  5. Step 5: Solve for x
    x = 18,977,924,008.18/156,078.88
  6. Step 6: Final answer
    x = 121,591.88

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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.