Home / 156,238.21-215,593.32-87,314.95

Finding the Fourth Proportional to 156,238.21, 215,593.32 and 87,314.95

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Solution

The fourth proportional to 156,238.21, 215,593.32 and 87,314.95 is: 120,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,238.21 : 215,593.32 = 87,314.95 : x
  2. Step 2: Convert to fraction form
    156,238.21/215,593.32 = 87,314.95/x
  3. Step 3: Cross multiply
    156,238.21x = 215,593.32 × 87,314.95
  4. Step 4: Simplify right side
    156,238.21x = 18,824,519,956.13
  5. Step 5: Solve for x
    x = 18,824,519,956.13/156,238.21
  6. Step 6: Final answer
    x = 120,486.02

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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.