Home / 156,257.21-215,619.54-87,333.95

Finding the Fourth Proportional to 156,257.21, 215,619.54 and 87,333.95

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Solution

The fourth proportional to 156,257.21, 215,619.54 and 87,333.95 is: 120,512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,257.21 : 215,619.54 = 87,333.95 : x
  2. Step 2: Convert to fraction form
    156,257.21/215,619.54 = 87,333.95/x
  3. Step 3: Cross multiply
    156,257.21x = 215,619.54 × 87,333.95
  4. Step 4: Simplify right side
    156,257.21x = 18,830,906,125.38
  5. Step 5: Solve for x
    x = 18,830,906,125.38/156,257.21
  6. Step 6: Final answer
    x = 120,512.24

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1.5x scale

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.